Due to electron shielding, which occurs when more electrons are introduced at the same energy level as the outermost electron, this is the case.
It is feasible to anticipate an atom’s reactivity, including which ion(s) will form from that element, thanks to the protons, neutrons, and electrons that give an atom its unique features.
What is the name for the particle formation of protons and neutrons?Since they are found in the atom’s nucleus, protons and neutrons are referred to as nucleons jointly.
How do protons, neutrons, and electrons affect an atom’s characteristics?The mass number of the chemical element will be determined in part by the number of protons and neutrons. The quantity of electrons present will depend on the number of protons.
The chemical will be determined by this electron.
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i. If a solution of formic acid contains 0.2 MHCHO2, 0.006 M CHO₂, and 0.006 MH*, what is the
Ka of the acid?
Ka of formic acid is 1.8·10⁻⁴ M.
Briefing :Chemical dissociation of formic acid in the water:
HCOOH(aq) ⇄ HCOO⁻(aq) + H⁺(aq).
K = [HCOO⁻] · [H⁺] / [HCOOH].
equilibrium concentration of [HCOOH] = 0.2 M,
equilibrium concentration of [H⁺] = 0.0.6 M,
equilibrium concentration of [HCOO⁻] = 0.006 M
K = (0.006 M)² / 0.2 M.
K = 0.00018 M.
K = 1.8·10⁻⁴ M.
What happens in a dissociation reaction?When one molecule splits into two smaller ones, a dissociation reaction takes place, which results in a loss of energy. Decomposition reactions, which are also known as dissociation reactions, are those in which a large molecule is broken down into smaller products.
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A compound consists of 37. 51 g c, 4. 20 g h, and 58. 29 g o. What is the empirical formula?.
The empirical formula is C6H8O7.
What is an empirical formula?A formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms, is known as empirical formula.
This can be done by calculating molar ratio of elements using masses and molar masses of the element.
Mass of Carbon (C) in given compound is= 37.51g
Mass of Hydrogen (H) in the given compound is= 4.20g
Mass of Oxygen (O) in given compound is= 58.29g
Molar mass of C = 12.0107g
Molar mass of H = 1.00784g
Molar mass of O = 15.999g
by diving the mass of elements with their respective molar masses we get the number of moles of elements:
no. of moles of C= 37.51/12= 3.123moles
no. of moles of H= 4.20/1.00784 =4.167moles
no. of moles of O = 58.29/15.999 = 3.643moles
The Molar ratio of elements/atoms can be obtained by diving the above number of moles with the lesser number of moles in the above three,
C= 3.123/3.123
H= 4.167/3.123
O= 3.653/3.123
By multiplying each ratio with '6' we get the whole number.
C= 1*6
H= 1.334*6
O= 1.166*6
The empirical formula is= C6H8O7.
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The empirical formula is [tex]C_{6} H_{8} O_{7}[/tex].
What is an empirical formula in chemistry?The relative atomic ratios in a compound are given by an empirical formula.
The chemical formula of a compound that gives the proportions (ratios) of the elements present in the complex but not the precise number or arrangement of atoms is known as an empirical formula.
This would be the compound's element-to-whole number ratio with the lowest value.
The ratios also hold true at the molar level.
Eg: The chemical structure of glucose is C6H12O6. Every mole of carbon and oxygen is accompanied by two moles of hydrogen. Glucose has the empirical formula CH2O.
Ribose has the chemical formula C5H10O5, which can be simplified to the empirical formula CH2O.
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why you think your claim is the best explanation for Jordan Jones’s improved performance.
Referring below mentioned assertions,
Claim 1: Jordan Jones used blood doping to accelerate his cellular respiration and boost his performance.
Claim 2: By altering his pre-race diet, Jordan Jones boosted his cellular respiration and overall performance.
Claim 3: By practicing at a greater altitude, Jordan Jones raised his cellular respiration and enhanced his performance.
The assertion that Jordan Jones trained at a greater altitude improved his performance and boosted cellular respiration is the strongest.Cycling is a widely popular sport, particularly in the US. There are now numerous cycling federations that organize competitions all over the world, making the sport more well-known.People who take part in athletic competitions frequently train at high altitudes.Therefore, the strongest claim is that Jordan Jones trained at a greater altitude, which enhanced his cellular respiration and improved his performance.
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help me !! Using the solubility curve, what is the effect of increased temperature on the solubility of KBr in 100 grams of water?
According to the graph, increasing the temperature of the solution will increase the solubility of KBr.
What is the relation between solubility and temperature?There is direct relationship between solubility and temperature because if one increases the other decreases whereas if one decreases the other is also decreases. The higher temperature of the solution is, the easier a solid will be able to dissolve in that solution while on the other hand, the lower is the temperature of the solution, the solid will not dissolve easily. In the graph, we can see that the line of KBr moves in the upward direction which clearly shows that with increasing temperature, the solubility of KBr is also increases.
So we can conclude that According to the graph, increasing the temperature of the solution will increase the solubility of KBr.
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a patient is suspected of having low stomach acid, a condition known as hypochloridia. to determine whether the patient has this condition, her doctors take a 20.00 ml sample of her gastric juices and titrate the sample with 1.72×10−4 m koh. the gastric juice sample required 17.2 ml of the koh titrant to neutralize it. calculate the ph of the gastric juice sample. assume the sample contained no ingested food or drink which might otherwise interfere with the titration
The answer would be the pH of the gastric juice sample is 5.1
In chemistry, pH, historically denoting "eventuality of hydrogen", is a scale used to specify the acidity or stipulation of an waterless result. Acidic results are measured to have lower pH values than introductory or alkaline results.
pH is defined as the negative log base 10 of the hydronium ion.
Formula : - log ([H⁺])
Now,
Volume of KOH, V1 = 17.2mL
Volume of HCI, V2 = 20mL
Molarity of KOH, M1 = 1.72 × 10⁻⁴ × M
The given titration is between KOH and gastric juice (HCI).
The molarity of HCI can be calculated using the relation,
M1 × V1 =M2 × V2 ---------- (1)
M2 = M1 × V1 / V2
Where, M1 is the molarity of KOH.
M2 is the molarity of HCI.
V1 is the volume of KOH.
V2 is the volume of HCI.
Substituting the values in equation (1),
M2 = 1.72 × 10⁻⁴ × 17.2 / 20.00
M2 = 1.49 × 10⁻⁵ g
The pH of gastric juice (HCI) can be calculated using the equation,
pH = -log[H⁺ ] -------- (II)
Since, HCI is a strong acid, it dissociates as follows, HCI H+CI
Therefore,
[HCl]=[H⁺]=[Cl⁻ ]= 1.49 * 10⁻⁵ * M
Substituting this in equation (II),
pH =-log[H⁺] = - log[1.49 × 10⁻⁵] = - log(1.49) + 5 × log(10)
The value of pH is calculated as,
pH = - log(4.78) + 5 × log(10) = -0.17314 +5 = 5.1
Hence, pH of gastric juice is 5.1
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Please help asap please. thanks :)
Answer:
phosphorus (P)
Explanation:
this is because when we add
2+2+6+2+3
we get 15
15 is also the atomic number so when we check the periodic table, we know phosphorus has an atomic number of 15 therefore the answer is phosphorus.
a. The rocks that make up the crust are relatively cold and ________________
The rocks that make up the crust are relatively cold and composed of igneous, metamorphic, and sedimentary rocks.
The outermost layer of a terrestrial planet is referred to as its "crust." All known life in the universe is contained in the thin, 40 km (25 mi) deep crust of our planet, which makes up just 1% of the planet's mass.
The crust, mantle, and core are the three layers that make up the earth. Minerals and solid rocks make up the crust. The mantle, which lies below the crust, is composed primarily of solid rocks and minerals with some malleable regions of semi-solid magma. There is a hot, dense metal core at the center of the Earth.
Rocks from igneous, metamorphic, and sedimentary types make up the crust of the Earth. Igneous rocks, which are created when magma cools, are the most prevalent types of rocks in the crust. Igneous rocks such as granite and basalt are abundant in the crust of the Earth.
Hence, the rocks that make up the crust are relatively cold and composed of igneous, metamorphic, and sedimentary rocks.
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If the average speed of a water molecule at 25°c is 640 m/s, what is the average speed at 100°c?.
The average speed of water molecules at 100°C will be 715 m/s.
The average speed of a molecule is given by the following equation
Average speed = √8RT/πM
Here T is the temperature
R is the universal gas constant
M is the molar mass of the molecule
From the above equation, we can see that the average speed of a water molecule is directly proportional to the root of the temperature.
Hence, the average speed v₁ at 25 °C is ∝ √298 ......(i)
And average speed v₂ at 100 °C is ∝ √373..........(ii)
Dividing equations (i) and (ii)
v₁/v₂ = √298/√373
640/v₂ = √298/373
v₂ = 640× √373/298
v₂ = 715 m/s
Hence, The average speed of water molecules at 100°C will be 715 m/s.
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how do you find the density
Which type of property?
Temperature: The amount of heat in a substance. It is measured in degrees. For
example: "This water sample has a temperature of 32 degrees Celsius."
O intensive property
O extensive property
Temperature is an intensive property.
A property of matter that is intensive depends solely on the kind of matter in a sample and not on the quantity.An intensive property is a property that does not depend on the amount taken. It is the same whether we take a small sample of it or a large sample of it.On the other hand, an extensive property is a property that does depend on the amount it has been taken into consideration.Temperature, similar to pressure or density, is called an intensive property—one that is independent of the quantity of matter being considered—as distinguished from extensive properties, such as mass or volume.To learn more about intensive property visit:
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JJ Thomson describes the atom with the plum-pudding model.
Describe Thomson’s model of the atom and why it was incorrect.
Thomson suggested that an atom's model resembling a plum pudding,
According to Thomson, an atom consists of a positively charged sphere with embedded negatively charged electrons. and an atom is electrically neutral because the positive and negative charges within it are of equal magnitude.
J.J. Thomson used a Crookes, or cathode ray, tube to conduct experiments that led to the discovery of the electron in 1897. He provided evidence that cathode rays have a negative charge. He also investigated positively charged neon gas particles. Thomson discovered that positively or negatively charged particles were not included in the conventional atomic model. As a result, he suggested a plum pudding-like model of the atom. The raisins in the dessert were the negative electrons, and the positive charge was in the dough.
The positive charges in the atom were not recognized as particles by Thomson's model of the atom, despite the fact that it did explain some of the electrical characteristics of the atom due to the electrons.
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The km of an enzyme is 5. 0 mm. Calculate the substrate concentration when this enzyme operates at one‑quarter of its maximum rate.
The substrate concentration of the enzyme operating at one‑quarter of its maximum rate is = 0.333.
Relationship between Km and substrate concentration is -
Km is the concentration of substrate.It allows the enzyme to achieve half Vmax. High Km enzyme requires a higher concentration of substrate to get Vmax. Since, Km is a constant. If the substrate concentration is increased, it has no effect on it.
An enzyme with a high Km has a low affinity for its substrate. The substrate concentration Km corresponds to the substrate concentration.
The substrate concentration at which the reaction rate of the enzyme-catalyzed reaction is half of the maximum reaction rate Vmax.
The equation is:
V₀ = Vmax [S]
[S] + Km
Here,
V₀ is initial rate,
Km is the dissociation constant between the substrate and the enzyme,
Vmax is the maximum rate, and
S is the concentration of substrate.
taking fraction of V₀ and Vmax :
V₀ = [S]
Vmax [S] + Km
V₀ = 0.5Km = 0.333
Vmax 1.50 + Km
Therefore, the substrate concentration of this enzyme operating at one‑quarter of its maximum rate is = 0.333.
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How many hours are there in a fortnight if a fortnight equals two weeks?
1 week= 7 days
1 day=24 hours
I have no idea, it’s circle answer, anyone know?
1. When you add hot water to cold water, the cold water warms up because of
a. insulation
b. convection
c. radiation
d. solar energy
Answer: Convection
Explanation: When you add hot water to a cold water, the cold water warms up because of convection. Convection refers to the invasion of warmer or hotter water to the cold water. The process relates to the situation where the cooler water sinks and the warmer water rises.
Answer:
b. convection
Explanation:
1 1 dimethylcyclohexane condensed structure
1 1 dimethyl cyclohexane condensed structure is C₈H₁₆.
A condensed structural formula is a gadget for writing natural systems in a line of text. It shows all atoms, however, omits the vertical bonds and most or all the horizontal unmarried bonds. The condensed structural formulas of ethane, propane, and ethanol are. CH₃CH₃, CH₃CH₂CH₃, and CH₃CH₂OH. A molecular formula tells best the numbers of atoms of every detail in a molecule of the compound.
The molecular system lists the structure and kind of atoms but offers no indication of the bonds between them. The condensed system is CH₃(CH₂)4CH₃. although less commonly used, the condensed formula of hexane may also be written as CH₃CH₂CH₂CH₂CH₂CH₃. The chemical and molecular system for cyclohexane is C6H12. The condensed structural formula for a compound indicates the carbon atoms adjacent to their attached hydrogen atoms. For cyclohexane, the condensed structural chemical formula is CH₂CH₂CH₂CH₂CH₂CH₂.
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A buffer is prepared which contains 0. 10 m nitrous acid, hno2, and 0. 12 m sodium nitrite, nano2. (ka=4. 5x10-4) calculate the ph after 0. 019 mol of naoh is added to 1. 00 l of the buffer
The pH value of the given buffer system after the addition of 0.019 mol of NaOH is 3.58.
To determine the pH of a buffer system, we use the Henderson-Hasselbalch equation:
[tex]pH = pK_{a} + log\frac{[base]}{[acid]}[/tex]
In our case, the base is sodium nitrite, while the acid is nitrous acid. Upon addition of NaOH, the added base will react with the acid, neutralizing it and turning it into sodium nitrite. We need to calculate how much acid and base we will have after the addition of NaOH:
[tex]n_{NaNO_{2} } = 1 L * 0.12 M + 0.019 mol = 0.139 mol[/tex]
[tex]n_{HNO_{2} } = 1 L * 0.10 M - 0.019 mol = 0.081 mol[/tex]
Because the volume of the solution is the same for both components, we don't need to calculate the actual concentrations and can just plug in the moles in the Henderson-Hasselbalch equation:
[tex]pH = -log(4.5 x 10^{-4}) + log\frac{0.139 mol}{0.081 mol} = 3.35 + log1.716 = 3.58[/tex]
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At the end of the experiment you will be assessing the purity of your aspirin by measuring its absorbance at 525 nm. If the absorbance measurement is found to be 0. 040 then what is the % salicylic acid impurity in your aspirin?.
At the end of the experiment you will be assessing the purity of your aspirin by measuring its absorbance at 525 nm. If the absorbance measurement is found to be 0. 040 then the % salicylic acid impurity in your aspirin will be 7.8 percent.
According to the inquiry, the sample solution's absorbance (A) is 1.07. Beer's law, which states that A = ebc, is used to calculate the aspirin concentration.
Here, b is the route length, which is equal to 1 cm, and e is the extinction coefficient, which is equal to 139.322 M-1cm-1 based on the salicylic acid standard value. Having established our ideals,
A = ebc
c = A / (eb)
c = 1.07 / (139.322 × 1)
c = 0.00768 M
To establish the percentage of salicylic acid in the sample, it is now necessary to compare the value of concentration calculated with the concentration of aspirin previously administered.
The question mentions that the starting concentration of aspirin is 0.02 grammes. The molar mass of aspirin is 240 g/mol.
The aspirin molecules will therefore be,
0.02 / 240 = 8.33 × 10^-5 moles
The final volume of the diluted solution given is 10 ml or 0.01 liters.
The molarity of aspirin in the diluted solution will be,
c1 = 8.33 × 10^-5 / 0.01 = 8.33 × 10^-3 M or 0.00833 M
Now, the percent of salicylic acid in the product will be,
c1 - c / c1 × 100
(0.00833 - 0.00768) / 0.00833 × 100 = 7.8 %
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1
When a person goes out in the sun, it is recommended they wear sunscreen. Why is sunscreen recommended outside, but not with indoor lights?
Answer:
discuss product service process position and paradigm innovation provide practical examples for echa
A specific nitrogen atom has 7 protons and 6 neutrons if this is neutral atom how many electrons does the atom have
Nitrogen atom have 7 electrons.
Is it possible for nitrogen to have seven electrons?Nitrogen is the seventh element, with seven electrons. The first two electrons in the electron configuration for nitrogen will be in the 1s orbital. Because the 1s orbital can only hold two electrons, the next two electrons for N are placed in the 2s orbital.When one shell is full, the next electron must move to the next shell. So you already know that the atomic number of NITROGEN tells you the number of electrons. That means a nitrogen atom has 7 electrons.The number of protons in a neutral atom equals the number of electrons. The atom's mass number (M) equals the sum of the number of protons and neutrons in the nucleus. The number of neutrons equals the difference between the atomic mass number (M) and the atomic number (Z).Protons are subatomic particles that have a positive charge. The strong nuclear force holds protons together in the nucleus of an atom. Neutrons are non-charged subatomic particles (they are neutral).
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Question 6 of 10
What are unit conversions used for?
OA. Unit conversions express the fractional size of something.
B. Unit conversions are used to write very large numbers.
OC. Unit conversions associate a number with its units.
D. Unit conversions express an amount in a different unit.
Unit conversions used for unit conversions are used to write very large numbers.
Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.
Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.
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Unit conversions used for unit conversions are used to write very large numbers.
Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.
Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.
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View the spinner. on which colors is it equally likely that the spinner will land? red and blue green and red blue and green yellow and green
Red and blue are spinner equally on land.
Explanation:The probability that a spinner will land on a different color:
[tex]p=\frac{total number favorable outcome}{total number of outcomes}[/tex] = [tex]\frac{total number favorable outcomes}{12}[/tex]
Probability of getting the spinner landing on red = [tex]\frac{3}{12} = \frac{1}{4}[/tex]
Probability of getting the spinner landing on green = [tex]\frac{4}{12} = \frac{1}{3}[/tex]
Probability of getting the spinner landing on blue = [tex]\frac{3}{12} = \frac{1}{4}[/tex]
Probability of getting the spinner landing on yellow = [tex]\frac{2}{12} = \frac{1}{6}[/tex]
Red and blue colors both have the same probability which means
that the chances of the spinner to land on red and blue colors are
equal.
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On red and blue, the spinner will land.
What is the probability of red and blue?Mathematics' field of probability deals with numerical assessments of how likely an event is to occur.
p = Total no of favorable outcomes/ Total number of outcomes.
Probability of getting the spinner landing on red = 3/12 = 1/4
Probability of getting the spinner landing on green = 4/12 = 1/3
Probability of getting the spinner landing on blue = 3/12 = 1/4
Probability of getting the spinner landing on yellow = 2/12 = 1/6
Blue and red have the same probability, so this indicates
that the spinner's chances of landing on the hues red and blue are
equal.
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when do you consider that a material has undergone physical change?
Answer:
Physical changes occur when object or substances undergo a change that does not change their chemical composition
it's when the appearance of the matter changes but the kind of matter does not
Explanation:
examples of physical changes:breaking glass
boiling water
melting ice
crumpling of paper etc
Hope this helpsAce that homework
Good luck ✅An atom has 8 protons, 9 neutrons, and 8 electrons. this atom has an atomic number of?
An atom has 8 protons, 9 neutrons, and 8 electrons then atomic number will be 8.
Proton can be defined as the particle which present in nucleus. it has positive charge.
Atomic number can be determined by the count of proton which occur in a particular atom.
It can be written as:
Number of proton = atomic number
8 = atomic number.
It is mentioned that the count of proton is 8 hence, the atomic number will be 8.
By adding count of protons and count of neutron, atomic mass can be calculated.
Therefore, atomic number will be 8.
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When viewing the euglena in lab, you should be able to positively identify the _________ and __________.
When viewing the euglena in lab, we should be able to positively identify the chloroplast and stigma.
What is chloroplast?Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via photosynthetic process. By doing so, they sustain life on the Earth. Chloroplasts also provide diverse metabolic activities for the plant cells, including the synthesis of fatty acids, membrane lipids,
Chloroplasts are a type of plastid—round, oval, or disk-shaped body that is involved in synthesis and storage of foodstuffs. Chloroplasts are distinguished from other types of the plastids by their green color, which results from the presence of two pigments, chlorophyll a and chlorophyll b. A function of those pigments is to absorb light energy for process of photosynthesis.
Other pigments, such as carotenoids, are also present in the chloroplasts and serve as accessory pigments, trapping solar energy and passing it to chlorophyll. In plants, chloroplasts occur in all the green tissues, though they are concentrated particularly in the parenchyma cells of the leaf mesophyll.
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if a compound is pure, the melting point should be... close to the expected value and very narrow (1-2°c) saved thinking about the affect of impurities... (0.5pts) if a compound is impure, containing traces of starting material or byproduct, the melting point is expected to be... close to the expected value and broad saved (0.5pts) if a compound is wet with water or residual solvent, the melting point is expected to be...
if a compound is pure, melting point should be close to the expected value and very narrow (1-2°c).
if a compound is impure, containing traces of starting material or byproduct, melting point is expected to be lower than the expected range and broad.
if a compound is wet with water or residual solvent, melting point is expected to be lower than the expected range and broad.
What is the difference between pure compound and impure compound?In simple terms, matter can be defined as anything and everything that has mass and occupies space. Everything from air you breathe, the water you drink, or the clothes you wear comes under the category of matter. It is made up of an elementary particle referred to as an atom. A further matter is subdivided into two the primary categories which are –
Pure substances Impure substancesPure and impure substances are different from one another and have the distinctive characteristics. Now, let’s look into them in the detail to get a clear understanding of Characteristics of a pure and impure substances.
When single types of atoms are combined together, it results in the formation of the pure substances. As a result, these substances possess the homogeneous chemical compositions and hold a fixed structure and chemical properties.
Impure substances, also known as the mixtures, are another type of matter formed through different kinds of molecules or atoms. The stature of these is not fixed or constant, unlike the pure substances. They can be broken down into the pure substances with the help of purification methods such as sublimation, filtration, crystallization, and so on.
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Identify the type of solid for ice. networking atomic solid molecular solid nonbonding atomic solid ionic solid metallic atomic solid
Molecular Solid can be described as the solid type for ice where the molecules are held together with low intermolecular force to form such kind of solids.
What qualifies as a molecular solid?Van der Waals forces hold molecules together to form molecular solids. These intermolecular forces are weak, which controls its characteristics. Molecular solids are electrical insulators, soft, frequently volatile, and have low melting temperatures.
What sort of molecular solid is that?Molecular solids are composed of atoms or molecules bound together by hydrogen bonds, London dispersion forces, or dipole-dipole forces. Characterized by weak conductivity, flexibility, and low melting points. Sucrose is a type of molecular solid.
What exactly does molecular solid mean?A solid made up of distinct molecules is referred to as a molecular solid. Molecular solids can be either soft or rigid.
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Complete Question
Identify the type of solid for ice.
A) Nonbonding atomic solid
B) Metallic atomic solid
C) Molecular solid
D) Ionic solid networking atomic solid
Give me examples of
(a) waterborne diseases
(b)communicable disease
and there causes
Answer:
(a) Waterborne diseases are caused by pathogens that are typically spread through contaminated water. Some examples include cholera, typhoid fever, and dysentery.
(b) Communicable diseases are caused by pathogens that can be spread from one person to another. Some examples include influenza, tuberculosis, and SARS.
The cause of influenza is a virus that spreads through direct contact with respiratory secretions or droplets from an infected person. The cause of tuberculosis is a bacterium that spreads through the air and is inhaled by another person. The cause of SARS is a virus that spreads through contact with respiratory secretions or direct contact with an infected animal.
Further explanation of key concepts for aforementioned waterborne diseases:
What is Cholera?
Cholera is an infection of the small intestine that is caused by the bacterium Vibrio cholerae. Cholera is typically spread through contaminated water or food, and can cause severe diarrhea and dehydration. In severe cases, cholera can be fatal. Treatment for cholera typically involves rehydration with fluids and electrolytes.
What is Typhoid Fever?
Typhoid fever is a potentially deadly bacterial infection that is most commonly spread through contaminated food or water. Symptoms of typhoid fever include fever, diarrhea, and abdominal pain. In severe cases, typhoid fever can lead to death. Treatment for typhoid fever typically involves antibiotics.
What is Dysentery?
Dysentery is a bacterial infection of the intestines that is typically spread through contaminated water or food. Symptoms of dysentery include severe diarrhea, abdominal pain, and blood in the stool. In severe cases, dysentery can be fatal. Treatment for dysentery typically involves antibiotics.
a monolayer containing 3.18×10-6 g of oleic acid has an area of 20.0 cm2. the density of oleic acid is 0.895 g / ml. what is the thickness of the monolayer (the length of an oleic acid molecule)? 5.69×10-5 cm 1.42×10-7 cm 7.11×10-5 cm 5.63×10-6 cm 1.78×10-7 cm
a monolayer containing 3.18×10-6 g of oleic acid has an area of 20.0 cm2. the density of oleic acid is 0.895 g / ml 1.78×10-7 cm is the thickness of the monolayer
Here given data is monolayer containing 3.18×10-6 g of oleic acid has an area of 20.0 cm2 and the given density of oleic acid is 0.895 g / ml and we have to find thickness of the monolayer=?
So from the information provided we have to calculate volume of monolayer hence, the thickness
Therefore volume=area × height
So given density = mass/volume
0.895 g / ml=3.18×10-6 g × x ml
X ml = 3.18×10-6 g / 0.895 g / ml = 0.35×10⁻⁵cm2
Volume of monolayer, volume = area × thickness so thickness = volume/area
0.35×10⁻⁵cm2 / 20.0 cm2 = 1.78×10-7 cm
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Based on the successive ionization energies for the following element "X", predict the formula that would be formed when "X" reacts with chlorine, Cl.
Based on the successive ionization energies, the formula that would be formed when "X" reacts with chlorine, Cl is XCl.
Since it is seen that there is a large gap in energy difference in second ionization energies ( from 577 to 1820), which means that the valance electron in the given element X is 1. So, the formula will be X⁺ and Cl⁻ is XCl.
Successive ionization strength is described because of the energy this is required to cast off the electron one after the alternative. Successive ionization power will rely on the range of electrons gift in the outermost shell.
Successive ionization energies boom in value due to the fact the variety of electrons, which purpose repulsion, progressively lower. This isn't always a smooth curve there may be a large leap in ionization power after the atom has misplaced its valence electrons.
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