The "di" prefix in the common name comes from the removal of two protons from phosphoric acid, [tex]H_3PO_4[/tex], during the formation of the [tex]HPO_4^2^-[/tex]anion. Calcium mono-hydrogen phosphate is another name for dibasic calcium phosphate.
What is an ion?An ion is basically an electrically charged atom or molecule. By convention, the charge of an electron is considered to be negative, and this charge is equal to and opposite to the charge of a proton, which is considered to be positive.
The common name's "di" prefix originates from the expulsion of two protons from phosphoric acid, [tex]H_3PO_4[/tex], even during establishment of the [tex]HPO_4^2^-[/tex] anion.
Thus, it can be concluded that the ions in the calcium hydrogen phosphate are calcium ion and hydrogen phosphate ion.
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1. Strawberries cost $4.64 per pound. How much would 15.70 gallons of strawberries cost?
Answer: $582.47
Explanation:
Convert $4.64 per lb to $ per gallon. That would equal around $37.10. Multiply that by 15.70 gallons of strawberries and you'll get $587.47.
15.70 gallons of strawberries would cost approximately $365.40.
To determine the cost of 15.70 gallons of strawberries, we need to convert the volume from gallons to pounds and then multiply by the cost per pound.
First, we need to know the conversion factor between gallons and pounds for strawberries. This conversion factor depends on the density or specific gravity of strawberries, which can vary. Without this information, it is not possible to accurately convert gallons to pounds.
If we assume an average conversion factor of 1 gallon of strawberries weighing approximately 5 pounds, we can estimate the cost. However, please note that this is an approximation and the actual weight of strawberries per gallon may vary.
15.70 gallons * 5 pounds/gallon * $4.64/pound = $365.40
Therefore, based on the approximation, 15.70 gallons of strawberries would cost approximately $365.40.
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Explain how the individual parts shown in the model come together to form a cycle.
Answer: The four main components of the earth system may be described briefly in the ... as energy is transformed from one form to another in performing work, heat is ... of solar radiation received (and re-emitted) at different points on the earth's surface. ... In general, cycles occur in closed systems; at the global scale, many systems
Explanation:
Why do you think the mass number
includes only the numbers of protons and neutrons?
Protons and neutrons make up the majority of an atom's mass because electrons have almost negligible mass. Consequently, an atom's mass in atomic mass units is determined by the sum of its protons and neutrons.
How do the quantity of protons and neutrons affect atomic mass?An element's mass number is determined by the sum of its proton and neutron counts: Protons and neutrons together make up mass. Simply deduct the number of protons, or atomic number, from the mass number to get how many neutrons each atom has.
This becomes significant when there is a mass number. It enables us to distinguish between elements known as isotopes that have differing numbers of neutrons.
Although protons and neutrons are similar in size, they are both significantly heavier than electrons (approximately 2,000 times as massive as an electron). A proton's positive charge is equivalent to an electron's negative charge in strength.
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This political cartoon drawn by John Donaghy appeared in The Daily Graphic on September 16, 1873. The message of this cartoon is reflective of what situation in the late 1800s?
She chops and shapes some of the larger pieces of wood into uniform shapes to build her shelter. What kind of change is taking place as the wood is chopped?
Answer:
a change in physical property
What did the Nuremberg Laws do:
A. Kept Jews from being German citizens and marked them with a Star of David
B. Establish the policy of mass-murder against the Jews
C. Moved Jews from occupied countries to ghettos
D. Prevented Jews from being teachers or judges
1. An alloy of gold and silver has a density of 13.1 g/cm³. Calculate the volume of a 4.80 g sample of the alloy.
The volume of the alloy of gold and silver having density of 13.1 g/cm³ and mass 4.80 g is 0.367 cm³.
We have an alloy of gold and silver.
We have to calculate the volume of a 4.80 g sample of the alloy.
Which term is used to define the ratio of Mass to density?The ratio of mass to density is equal to volume of a substance. Mathematically -
M/ρ = V
ρ - density of substance.
M - mass of substance
V - volume of substance
According to the question -
The ratio of mass to density is -
V = M / ρ
Substitute the values -
V = 4.80 / 13.1 = 0.367 cm³.
Hence, the volume of the alloy of gold and silver is 0.367 cm³.
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If the barometric pressure (Patm) is 766 Torr and h = 141 mmHg, then what is the pressure of the gas in the bulb? Please express your answer in units of atmospheres. The pressure is. atm.
The Pressure of gas in the bulb = 1392.70 atm
1) The barometric pressure is also called atmospheric pressure as it is the pressure with in the earth.
The SI unit of this pressure is = pascals.2) The given values are
The barometric pressure = 766 Torr = 1.00789 atm (convert the value of torr into the standard pressure that is atm)
The height of Barometer (in mercury)= 141 mmHg
Pressure of a gas in bulb = need to find out.
The formulae used is
P=ρ×g×h, where:
P = pressure of gas (unknown )
g = acceleration due to gravity = 9.8m/s²
h = Hight of the liquid
By substituting all the values in above equation,
P = 1.00789×9.8× 141
P = 1392.70 atm
so the The barometer whose barometric pressure is 1392.70 atm atm exerted by the mercury and the height of the liquid is 141 mmHg.
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Which of the following are some properties of small hydrocarbons compared with larger hydrocarbons?
A) Higher boiling point, lower volatility, lower viscosity, lower flammability
B) Lower boiling point, higher volatility, lower viscosity, higher flammability
C) Lower boiling point, lower volatility, lower viscosity, lower flammability
D) Higher boiling point, higher volatility, higher viscosity, higher flammability
QUESTION 1
Sugar is blank meaning it can readily absorb moisture.
Answer:
sugar is hygroscopic
Explanation:
sugar is hygroscopic
A star is estimated to have a mass of 2.0 ✕ 1036 kg. Assuming it to be a sphere of average radius 6.7 ✕ 105 km, calculate the average density of the star in units of grams per cubic centimeter.
Taking into account the definition of density, the density of the star is 1,587,553.58 g/cm³.
Definition of densityDensity is defined as the quantity that allows us to measure the amount of mass in a certain volume of a substance.
Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
density= mass÷ volume
Density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
Average density if the starIn this case, you know that:
Mass= 2×10³⁶ kg= 2×10³⁹ g (being 1 kg= 1000 g)Volume of the sphere= 4/3×π×r³ where r is the radius of the sphereVolume of the sphere= 4/3×π×(6.7×10¹⁰ cm)³= 1.2598×10³³ cm³ (being 1 km equals to 100,000 m, 6.7×10⁵ km= 6.7×10¹⁰ cm)Replacing in the definition of density:
density= 2×10³⁹ g÷ 1.2598×10³³ cm³
Solving:
density= 1,587,553.58 g/cm³
In summary, the density of the star is 1,587,553.58 g/cm³
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Question 1.4) Two bottles of the same gas are connected. One bottle has 15 particles at first and one has 2 particles. What will happen over time? Why?
We know that in gas the particles are loosely packed, that is it can move freely compared to solid and liquid. Two bottles of the same gas are connected. One bottle has 15 particles at first and one has 2 particles. Diffusion will occur. The particles will move until the volume in both the bottles will be equalized.
For gas there are three laws which are applied. Boyles law, Charles law and Avogadro's law.
Boyles law here it is the relationship between the pressure and the volume. when the volume of the gas at constant temperature varies with pressure applied on it inversely. Formula
P₁V₁=P₂V₂
Charles law is explained in the terms of temperature and volume. it states that the volume of the gas in a fixed amount is directly proportional to its temperature if and only the pressure remains constant. formula
V₁/T₁=V₂/T₂
Avogadro's law is related with the amount and the volume. it says that under the same condition the pressure and the temperature, the equal volume of different gases contains equal number of molecules.
V₁/n₁=V₂/n₂
Diffusion will occur and the particles will be same in both.
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How many cars are in 2.5 moles of cars?
The number of tires contained by 2.5 moles of cars is 10 tires.
What is number of moles?The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance.
The number of tires contained by 2.5 moles of cars is calculated as follows;
1 moles of a car contains 4 tires
2.5 moles of cars will contain -------?
Substitute the given parameters and solve for the number of tires contained in 2.5 moles of cars.
= 2.5 moles x 4 tires/1 mole
= 10 tires
Thus, the number of tires contained by 2.5 moles of cars is 10 tires.
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Why is a simple stain not used when analyzing a sample obtained from a nonsterile part of the body like the throat? WILL GIVE A LOT OF POINTS!!!!
Answer:
Simple staining provides the contrast between the bacteria and the surroundings.
Explanation:
Over staining the bacterial smear may cause the cell wall disruption or totally destroy the cell wall which results in the loss of true morphological characteristics of the bacterial cell
Convert 3.974×10^10 grams to mg
Answer:
3.974 x 10¹³ mg
Explanation:
To find the amount in milligrams (mg), you need to multiply the given number by the conversion, 1,000 mg/g. This conversions exists as a ratio which compares the amount of mg per every 1 g. It is important to arrange the ratio in a way that allows for the cancellation of units (grams should be in the denominator).
1,000 mg = 1 g
3.974 x 10¹⁰ g 1,000 mg
----------------------- x ------------------- = 3.974 x 10¹³ mg
1 g
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients
C(s) + H₂(g) → C₂H. (g)
6
Illustrate the structural and functional difference between glucose and fructose?
Question: ) ✨ Illustrate the structural and functional difference between glucose and fructose?
Answer: We know that Glucose is six membered ring, while fructose is a five-membered ring. Both rings contain an oxygen atom.Glucose and fructose are structural isomers: have the same chemical formula but have different arrangement of atoms. While glucose has aldose sugar- carbonyl group at the end of the chain, fructose has ketose sugar- carbonyl group in an internal of the chain (specifically, at the second carbon.
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Explanation:
Why does the middle element in a specific group of similar elements act as an intermediate between the other two? A:A. The middle element is more likely to react with other elements. B:B. The middle element has more atoms than the other two elements. C:C. The middle element is close to the average of the other two elements. D:D. The middle element is more common in nature than the other two elements.
The middle element in a specific group of similar elements act as an intermediate between the other two because it is close to the average of the other two elements and is denoted as option C.
What is an Element?These are the substances which aren't unable to be broken down by a chemical reaction and comprises of subatomic particles such as electron, proton etc.
The middle element in a specific group of similar elements act as an intermediate between the other two because it is close to the average of the other two elements when arranging the elements in order of their atomic masses.
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How would you define the period of a pendulum?
A.) time it takes the pendulum to make one full back-and-forth swing
B.) time it takes the pendulum to swing forward only
C.) time it take the pendulum to swing back only
The period of the pendulum is defined as time it takes the pendulum to make one full back-and-forth swing
What is a pendulum?The pendulum is a device that could be used to demonstrate oscillatory motion. We know that the pendulum has a long string that is fastened to a support. The bulb is displaced at a small angle and the period is the time that is taken to complete the cycle.
The kind of motion that is undergone by a pendulum is what we define as the oscillatory motion. It is a regular repeating motion and the acceleration is directed always towards the center of the motion.
We can tell that the pendulum swings from one side to the other and we could use the stop clock to measure the movement of the pendulum. Thus it follows that the period of the pendulum is defined as time it takes the pendulum to make one full back-and-forth swing.
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A block has a mass of 4.495 and a volume of 147.4 calculate the density
Answer:0.0303495251
Explanation:
I know the answer looks weird.
If the answer is wrong then the formula for density is mass divided by volume.
68.0 g H₂CC1₂. how many moles
Answer:
0.801 moles H₂CCl₂
Explanation:
To find the amount of moles, you need to multiply the given mass by the molar mass. The molar mass is a ratio describing the mass (g) per every 1 mole. The molar mass of H₂CCl₂ can be calculated by adding the atomic masses of each atom within the molecule.
When multiplying a number by the molar mass, it is important to arrange the ratio in a way that allows for the cancellation of units (moles should be in the numerator). The final answer should have 3 sig figs like the given value (68.0 g = 3 sig figs).
Atomic Mass (H): 1.008 g/mol
Atomic Mass (C): 12.011 g/mol
Atomic Mass (Cl): 35.453 g/mol
Molar Mass (H₂CCl₄): 2(1.008 g/mol) + 12.011 g/mol + 2(35.453 g/mol)
Molar Mass (H₂CCl₂): 84.933 g/mol
68.0 g H₂CCl₂ 1 mole
------------------------- x ------------------ = 0.801 moles H₂CCl₂
84.933 g
A mixture of CaBr2 and inert material is analyzed to determine the Ca content. First the mixture is dissolved in water. Then all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate.
CaBr2(aq) + 2AgNO3(aq) 2AgBr(s) + Ca(NO3)2(aq)
In one experiment, a 0.8206 g sample of the mixture resulted in 1.1196 g of AgBr. Determine the percent (by mass) of Ca in the mixture.
The mass percent of calcium is 14.5%.
What is the mass percent of calcium?We know that a reaction is said to occur when there is an interaction between two reactants that leads to the formation of a product. In this case, the equation of the reaction is shown in the question above.
Number of moles of silver bromide produced = 1.1196 g/188 g/mol = 0.00595 moles
If 1 mole of calcium bromide produces 2 moles of silver bromide
x produces 0.00595 moles of silver bromide
x = 0.00595 moles * 1 mole/2 moles
= 0.00298 moles
Number of moles calcium ions in sample = 0.00298 moles
Mass of calcium in sample = 0.00298 moles * 40 g/mol = 0.1192 g
Mass percent of calcium = 0.1192 g/ 0.8206 g * 100/1
= 14.5%
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4. Write the configuration for the electron:
a) 4, 2, -1, +1/2
Electron configuration can be defined as the specific arrangement of negatively charged electrons in different energy levels around atomic nuclei.
How to write electronic configuration ?Electronic configuration of 4 = [He]2s2
Electronic configuration of 2= 1s2
Electronic configuration of -1= No configuration
Electronic configuration of 1/2= No configuration
Hence electronic configuration finds this above way.
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How much Tween 20 is needed to prepare 350 mL of a 10% Tween 20 (v/v) solution?
a. 35 ml
b. 350 ml
c. 3.5 ml
d. 0.350ml
35ml of tween 20 needed to prepare 350 mL of a 10% Tween 20 (v/v) solution
according to the question to prepare 10% of tween 20 (v/v) solution so, 350(0.1)= 35ml.
Since liquids are frequently measured in volume, volume percent, abbreviated as v/v%, is frequently used to describe the concentration of binary mixtures of liquids. When you purchase isopropanol (rubbing alcohol) at the shop, for instance, you'll see that it says 70% (vv), which denotes by volume. So its one of the convenient way of calculating volume of solutions.
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The correct answer is 35ml of tween solution.
Tween 20 is a non-ionic detergent that is utilized in numerous biological processes, such as western blotting and immunochemistry. A liquid with a high viscosity is tween 20.To prepare, 35ml of tween 20 are required. 350 mL of a 10% (vol/vol) Tween 20 solutionPrepare 10% of the tween 20 (v/v) solution per the question; hence, 350(0.1) = 35ml.Volume percent, abbreviated as v/v%, is widely used to express the concentration of binary mixes of liquids because liquids are frequently measured in volume. For instance, you'll observe that the label on isopropanol (rubbing alcohol) at the store states 70% (vv), which stands for by volume.This makes it one of the practical methods for determining the volume of solutions.
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CERER science Q= how is kinetic energy related to temperature?
C
E
R
E
R
Need this ASAP LIKE NOW
A substance's temperature in physics' laws, is directly related to the average kinetic energy of its particles. Because the particles' mass is constant, they must travel faster as the temperature rises.
What is Kinetic Energy?In physics, the kinetic energy of an object is the energy it possesses as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a given speed.
The body retains its kinetic energy, having acquired it during acceleration, until its speed changes.
Kinetic energy is present in an accelerating ball, a walking human, and electromagnetic radiation like light. Another type of kinetic energy is the energy associated with the continuous, random bouncing of atoms or molecules.
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How does a lithium cation compare to a lithium atom?
The cation is larger.
The cation has the same radius.
The cation is smaller.
The cation has the same charge.
The lithium cation is smaller than lithium atom .
The lithium atom's electronic configuration is as follows:
Li = 1s², 2s
While the following describes the electronic structure of the lithium cation,
Li⁺ = 1s
Some of the reasons why lithium cation is shorter than the corresponding parent atom .
Reduced Energy LevelsThe Li atom's valence shell is shown in electronic configurations as being two whereas the Li cation's is one; as a result, the distance between the valence electrons and nucleus has shrunk, resulting in small size.
Less Shielding EffectShielding effect refers to the way the core electrons protect the valence electron from nucleus pull. Since there are no core electrons in a cation of lithium, the electrons are more drawn to the proton, which causes the cation to be tiny.
More nuclear chargeThree protons and three electrons make up the Li atom; as a result, three protons will pull three electrons, making the game somewhat balanced. However, once one electron leaves the Li cation, the proton side becomes stronger and exerts more force on the remaining electrons, bringing them closer to the nucleus and shrinking their size.
In this way, a lithium cation became shorter than its corresponding parent atom.
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how do you separate water and oil
Answer:
below
Explanation:
Oil and water don't mix because they are insoluble (do not mix) to each other. The only way to separate water and oil would be to use a separating funnel. A separating funnel is a funnel that has the ability to separate two liquids.
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Which statement is true about stable isotopes
Stable isotopes are non-radioactive form of atoms.
properties of stable isotopes are :-
They have a stable nucleus that does not decay, so they are stable. Most of the isotopes become stable by emitting alpha particles, beta particles, positrons, or gamma rays. A few of them become stabilize themselves by electron capture or by spontaneous fission. there are 256 known stable isotopes of the 80 elements which have one or more stable isotopes.Atoms found in nature are either stable or unstable. An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy.
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this question is incomplete, above content might be helpful
Which characteristic property of the substances in the solutions does thin-
layer chromatography utilize?
O molecular polarity
O conductivity
Odensity
particle size
The characteristic property of the substances in the solutions does thin-layer chromatography utilize is molecular polarity. The correct option is A.
What is thin layer chromatography?Thin layer chromatography s used to separate the molecules on the basis of their polarity. It is done on a thin sheet of aluminum foil or glass or plastic in which the molecules are poured, and then it is covered by a sheet of material.
When solvents travel through the sheet, the molecules travel at different speeds or paces.
Thus, the correct option is A, molecular polarity.
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Pieces of potassium (3.68 x 10-19 J) and sodium (4.41 x 10-19 J) metal are exposed to radiation of wavelength 270.0 nm.
Which metal emits electrons with the greater velocity?
What is the velocity of the electrons from potassium?
559
m/s
What is the velocity of the electrons from sodium?
Potassium emits more electrons with the greater velocity.
What are electrons?The electric charge of the electron, a subatomic particle, is a negative one elementary charge. Because they are assumed to be elementary particles and do not have any known components or substructure, electrons are part of the first generation of the lepton particle family.
The velocity of the electrons from potassium is 8.055 x 105 m/s
The velocity of the electrons from sodium 2/5 V
According to Bohr's model the velocity of an electron is-
[tex]V_{N}[/tex] = [tex]Ze^{2}[/tex] /2nh
[tex]V_{n}[/tex] ∝ 1/5
[tex]V_{5}/V_{2}[/tex]
= 2/5
Given that:- [tex]V_{2}[/tex] =v
[tex]V_{5}[/tex]
= 2/5 v
Hence the velocity of an electron will be
2/5v.
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The pace at which an object's position changes in relation to a frame of reference is known as its velocity, and it depends on time.
What is Velocity?The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time.
The displacement of the item in one unit of time is the definition of velocity. You are aware that a big displacement over a short period of time corresponds to a large velocity, and that velocity is measured in terms of the speed of objects in terms of miles per hour or kilometers per hour. Potassium is an element with the symbol K.To learn more about Velocity refer to:
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