A droplet of pure mercury has a density of 13.6 g/cm^3. What is the density of a sample of pure mercury that is 10 times as large as the droplet?

Answers

Answer 1

Answer: The only thing you need to solve it is to know that
density = mass or volumes
It does't matter which mass do you have- density is always the same, therefore 13.6 g/cm^3×10

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At STP, which sample contains the same number of molecules as 3.0 liters of hydrogen gas?
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Which of the following compounds is least solublein water?
(1) copper (II) chloride
(2) aluminum acetate
(3) iron (III) hydroxide
(4) potassium sulfate

Answers

Iron (III) hydroxide is the least soluble compound as it has the lowest Ksp value.

What is solubility of a solute?

The solubility is the amount of solute that can dissolve in a given volume of solvent at a particular temperature.

The solubility of substances can be compared using their their solubility products constant (Ksp) values.

Iron (III) hydroxide has the lowest Ksp value.

Therefore, Iron (III) hydroxide is the least soluble compound.

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Answer:3

Explanation:

stated

What is the answer to this question?

Answers

I think it's 4 but I am not even 50% sure... But I think that is the answer..

In 1 kilogram of pure water, the mass of hydrogen atoms is approximately 112 grams, or 0.112 kilograms. What is the energy equivalent of this mass in joules?

Answers

Using Einstein’s famous equation, E = mc^2

Given mass, m = 0.112 kg and knowing c = 3.0 x 10^8 m/s, energy E can be determined

E = (0.112 kg)(3.0 x 10^8 m/s)^2

= 1.008 x 10^16 J

Hope this helps

Answer:

$1.008* 10^(16)$ Joules is the energy equivalent of this .

Explanation:

Mass of hydrogen atoms in 1 kg of water = 112 g= 0.112 kg

Mass and energy related together and that expression was given by the famous scientist named Albert Einstein:

$E=mc^2$

E = Energy related to mass m

c = Speed of the light

m = 0.112 kg , c = $3* 10^8 m/s$

$E=0.112 kg* (3* 10^8)^2=1.008* 10^(16) J$

$1.008* 10^(16)$ Joules is the energy equivalent of this .

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?1) 1 mol of oxygen has fewer molecules.2) 1 mol of oxygen has more molecules.3) Each sample has the same number of molecules.4) The molecules cannot be compared without knowing the mass.

Answers

The number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen is that each sample has the same number of molecules. The answer is number 3

Answer:

3) Each sample has the same number of molecules

Explanation:

1 mol are 6,022x10²³ particles. Moles of a chemical substance represent the number of molecules that this chemical has.

Thus, one mol of oxygen are 6,022x10²³ molecules of oxygen and one mol of nitrogen are 6,022x10²³ molecules of nitrogen.

Right answer is:

3) Each sample has the same number of molecules.

I hope it helps!

A substance with a definite shape and volume is a ___ phase of matter

Answers

Explanation:

Matter in which molecules have strong force of attraction are held tight together. Therefore, to break this force of attraction strong force is required.

This type of matter is know as solid. Also, it is known that solid substances have definite shape and volume.

Thus, we can conclude that a substance with a definite shape and volume is a solid phase of matter.

I would say solid shape of matter.

Solids retain their shape and size, if kept constant temperature and pressure. At a constant temperature and pressure, liquids retain their:a. volume
b. shape
c. size
d. shape and volume

Answers

At a constant temperature and pressure, liquids retain their volume of matter.

What are the properties of matter ?

Matter is defined as total mass which occupy in space, all the physical structures are composed of matter, it can be present in three basic states such as solid, liquid, and gas.

The atoms are basic unit of matter and that make up the objects which can be visible and touched every day, the amount of matter in an object can be determined by its mass.

A physical property of matter is an independent of its chemical composition. Density, color, hardness, melting and boiling points, and electrical conductivity are the examples.

Some characteristics like density, color, mass, volume, length, malleability, melting point, hardness, odor, temperature are some properties of matter.

Learn more about properties of matter , here:

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simply volume, as shape and size depend on the host container

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