You will need

- A sheet of paper, a pen.

Instruction

1

The formula is as follows: p•Vm = R•T where p is the pressure, Vm is molar volume of

**gas**, R is the universal gas constant, and T is the absolute temperature of an ideal**gas**.2

Find out what data is available to us in order to use the formula, thus: T = (p•Vm)/ R.

3

If we are not aware of molar volume of

Vm = V/?. In this formula ? represents the number of substances to Find this value is possible by dividing the mass

**gas**, we can find it by formula:Vm = V/?. In this formula ? represents the number of substances to Find this value is possible by dividing the mass

**of gas**to its molar mass.4

The formula, which is called the law of Mendeleev-Clapeyron, is written in this form: p•V = (m/M) • R•T.

5

Modifies this formula to find

**the temperature of the****gas**: T = (p•V • M)/(R• m).6

Find all the values that require us to substitute into the formula. Calculations and find the desired

**temperature**perfect**gas**.Note

Carefully examined in the legend, due to a correctly recognized symbol in the formula to prevent the error in the calculations.

Useful advice

The law Mendeleev-Clapeyron also called the combined gas law, that from it are derived the laws of Charles and Gay-Lussac, and Boyle.