Question

A certain amount of gas at 20c at 4atm occupies a volume of 10dm^3.calculate its number of moles

Answer 1

`n=1.7 mol`

Step-by-step explanation:

Hello!

In this case, according to the ideal gas equation, it is possible to notice that:

`PV=nRT`

Thus, since we are asked to compute moles, we proceed as follows:

`n=(PV)/(RT)`

Now, since 1 L = 1 dm³ and 20 °C equal 293.15 K, we obtain:

`n=(4atm*10 L)/(0.08206(atm*L)/(mol*K)*293.15K)\\\\n=1.7 mol`

Best regards!