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3 years ago

Help! please

Chemistry

1 answer:

borishaifa [10]3 years ago

3 0

Answer:

The correct answers are : A neutron has no charge; Neutrons travel around the nucleus of an atom.

Explanation:

The neutrons correspond to subatomic particles present in the nucleus of the atoms, together with the protons. Neutrons do not have an electric charge and have similar mass to protons. The difference in neutrons between atoms of the same element is called an isotope (they differ in mass numbers from one another, for example Hydrogen and Deuterium).

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3 years ago

A sealed balloon occupies a volume of 250 mL at an unknown temperature. When the temperature is altered to 30 C, the balloon's v

Allushta [10]

Answer:

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Explanation:

Given the following data;

Initial volume, V1 = 250 mL to Liters = 250/1000 = 0.25 L

Final temperature, T2 = 30°C

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To find the initial temperature T1, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

$\frac {V}{T} = K$

$\frac{V1}{T1} = \frac{V2}{T2}$

Making T1 the subject of formula, we have;

$T_{1}= \frac{V_{1}}{V_{2}} * T_{2}$

Substituting into the formula, we have;

$T_{1}= \frac{0.25}{0.5} * 30$

$T_{1}= 0.5 * 30$

<em>Initial temperature, T1 = 15°C</em>

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3 years ago

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