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3 years ago

What do you think happens to the bonds between atoms when substances melt?

Chemistry

1 answer:

Eduardwww [97]3 years ago

6 0

Answer:

As a substance melts, and goes from a solid to a liquid state, the kinetic energy of the molecules increases, and the molecules move faster, and they separate further and further away from each other. The intermolecluar forces holding the molecules together become weaker. This is why a liquid can take fill the shape of its container, whereas a solid has a fixed shape.

Explanation:

take your notes man

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Kisachek [45]

Answer:

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Explanation:

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2 years ago

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2.50 g CuCl2 equals how many moles

Vitek1552 [10]

The molar mass of CuCl2 is 134.45 g/mol; therefore, you divide 2.5 g of CuCl2 by 134.45 g of CuCl2 leaving you with 0.019 moles

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3 years ago

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Which describes how radiation moves?

vazorg [7]

Hey <span>wademcelroy2005, thanks for submitting your question to Brainly!

The answer to your question is </span><span>B:Radiation moves from a warmer object to a cooler object</span>

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3 years ago

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The expression below was formed by combining different gas laws. V is proportional to StartFraction n T over P EndFraction. Whic

Ronch [10]

Answer:

The Ideal gas law

Explanation:

From the given question, we have:

V $\alpha$ $\frac{nT}{P}$

where each variable has its usual meaning.

Thus,

V = $\frac{nRT}{P}$

where R is the ideal gas constant

cross multiply to have;

PV = nRT

This implies that the volume of the gas is directly proportional to the number of moles of the gas.

Therefore, the law can be used to determine the relationship between the volume and number of moles is the ideal gas law.

3 0

3 years ago

what is the molecular formula of a compound that contains 38% c, 45% n and 16% h if 0.157 g of the compound occupies 125 ml with

EastWind [94]

The molecular formula of the given compound is CH₅N.

<h3>What is the ideal gas equation?</h3>

The ideal gas law has defined the product of the volume and pressure as equal to the product of the gas constant (R) and absolute temperature of the gas.

The mathematical equation of the ideal gas law is as follows:

PV = nRT

The temperature of the compound, T = 22° C = 295 K

The pressure of the compound, P = 99.5 KPa = 0.982 atm

The volume of the compound, V = 125 ml = 0.125 L

0.125 × 0.982 = (0.157 g/M) × 0.082 ×295

M = 31 g/mol

A number of moles of C = 0.157 ×0.37/12 = 0.00484

A number of moles of N = 0.157 ×0.45/14 = 0.00504

A number of moles of H = 0.157 ×0.16/1 = 0.0251

The simplest ratio of C: N: H is 1 : 1 : 5

The empirical formula of the given compound is CH₅N.

The molecular formula of the compound is CH₅N as the molecular mass is equal to 31 g/mol.

Learn more about ideal gas equation, here:

brainly.com/question/3637553

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10 months ago