Question

How do you find the number of moles of gas from the temperature and pressure?

Answer 1

Hint In order to find the number of moles of gas from the temperature and pressure, we must first know what an ideal gas is. Ideal gases are those gases which will follow all gas laws involving temperature and pressures.

Complete step by step solution:
Let us first understand about the ideal gas. Ideal gas is a gas which will follow certain rules. The first rule is that ideal gases will not attract or repel each other. Second rule is that ideal gases do not take up the volumes for themselves. The gases which can follow the ideal gas equations are called the ideal gases. The equation for the ideal gas is given below:
i.e., $PV = nRT$
where,
P is the Pressure of the gas
V is the Volume of the gas
N is the number of moles of the gas
R is the gas constant
T is the temperature
When we rearrange the ideal gas formula, we will get the following formula for calculating the number of moles of gas.
$n = \dfrac{{PV}}{{RT}}$

Note:
We have to remember that the Ideal gases will follow different gas laws such as
- Charles’s law
- Boyle’s law
- Avogadro’s law
- Gay-Lussac’s law