If there are the three different compounds present in three test tubes with approximately same melting points.
What is melting point?Melting point, temperature at which the solid and the liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until melting point is reached. More heat then will convert solid into a liquid with no temperature change.
When all solid has melted, the additional heat will raise the temperature of the liquid. The melting temperature of crystalline solids is a characteristic figure and is used to identify the pure compounds and elements. Most mixtures and amorphous solids melt over a range of the temperatures.
The melting temperature of a solid is generally considered to be same as the freezing point of the corresponding liquid; because a liquid may freeze in different crystal systems and because the impurities lower the freezing point, however, the actual freezing point may not be the same as the melting point. Thus for characterizing a substance, melting point is preferred. See also melting.
If there are the three different compounds present in three test tubes with approximately same melting points. Firstly, if the melting point of each sample has been recorded thrice. It will result small difference in the readings. along with this is not necessary that three compounds with nearly same melting point have same solubility. The three components can be identified as different from their solubility in the various solvents.
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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.
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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how do you find the density
How many hours are there in a fortnight if a fortnight equals two weeks?
1 week= 7 days
1 day=24 hours
The Mississippi River is one of the largest waterways in
the United States. It is an important water resource. How
do you think this water resource benefits the neighboring communities?
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay.
Only the conjoining Missouri is longer than the second-longest river in the US, the Mississippi, which also supports a $12.6 billion shipping sector and 35,300 employment nationwide. It is one of the largest waterways in the world, transporting goods and food for the entire planet.
Water is a valuable resource that is used in a wide variety of ways because of its unique properties. Water is essential to all life for survival. Without fresh water, people cannot endure for longer than five to seven days.
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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:
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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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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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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I have no idea, it’s circle answer, anyone know?
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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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
The density of nickel is 8.9 g/cm3. How many cubic decimeters does 1335 grams of nickel occupy?
If the density of nickel is 8.9 g/cm3, it occupies 0.15 cubic decimeters in 1335 grams of nickel.
Density is defined as the mass of a unit volume of a material substance, the space occupied by the unit mass of a material. It is the degree of compactness measured by the quantity of mass per unit volume.
density = mass/ volume
volume = mass/ density
here the given mass is = 1335 grams
and the density given is = 8.9
=1335/8.9
=150
therefore volume calculated is 150 cubic centimeter
1 cubic centimeter is equal to 0.001 cubic decimeter
150 cubic centimeter is equal to 0.15 cubic decimeter
If the density of nickel is 8.9 g/cm3, it occupies 0.15 cubic decimeters in 1335 grams of nickel.
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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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If+10+pints+of+a+5%+solution+are+diluted+to+40+pints,+what+is+the+percentage+strength+of+the+dilution?
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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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
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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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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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.
Which of the following is a function of a nerve cell?
The correct answer choice about the function of a nerve cell is: They send and receive electrical impulses.
The correct answer choice from the above is option b.
What is a nerve cell?Nerve cells or neurons are are bundle of fibers which are connected through out the nervous system which helps detecting, recieving and sending information in informed.
The nerve cell are also known neurons are like electrical wires which runs throughout the body system in sending and receiving information.
So therefore, the correct answer choice about the function of a nerve cell is: They send and receive electrical impulses
Complete question:
Which of the following is a function of a nerve cell?
a. They released hormones
b. They send and receive electrical impulses
c. They are concerned with osmoregulation
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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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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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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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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 ✅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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you intend to prepare 500 ml of a 0.1m solution of nacl, but you forget to remove the stir bar when you bring the solution to volume. the stir bar has a volume of 1 ml and weighs 4 g. what is the percent error in your molarity?
We intend to prepare 500 ml of a 0.1m solution of NaCl, but you forget to remove the stir bar when we bring the solution to volume. the stir bar has a volume of 1 ml and weighs 4 g, the percent error in our molarity is 0.2%.
What is percent error?Percent errors indicate how big our errors are when we measure something in analysis process. Smaller percent errors indicate that we are close to accepted or original value.
For example, a 1% error indicates that we got very close to accepted value, while 48% means that we were quite a long way off from the true value. Measurement errors are often unavoidable due to certain reasons like hands can shake, material can be imprecise, or our instruments just might not have capability to estimate exactly.
The percent error formula will let us know how seriously these inevitable errors influenced our results.
Percent error is difference between estimated value and the actual value in comparison to the actual value and is expressed as a percentage. In other words, the percent error is relative error multiplied by 100.
The percent error formula
Formula for percent error is:
PE = (Estimated value-Actual value|/ The Actual value) × 100
0.1% M NaCl
Amount of NaCl require to prepare 0.1M NaCl calculated:
M1= [tex]\frac{1000*x}{58.5*500}[/tex]
x= 2.95g
but stir bar consume 1ml so actual value of solution is not 500ml but it is 500-1= 499ml
so, molarity= [tex]\frac{1000*2.925}{58.5*499}[/tex]
M2= 0.1002M
%error= [(M1-M2)/M1]*100
=0.2%
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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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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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Which of the following is an unsafe lab procedure?
Fire. It's all fun and games until someone ignores the Bunsen burner! ...
Heat Burns. Handling hot items hastily without the proper tools can result in serious burns. ...
Chemical Burns. ...
Cuts and Scrapes. ...
Contamination. ...
Inhalation. ...
Spills and Breaks.