354.5 g of chlorine gas (MW = 70.9 g/mol) is held in a vessel with a fixed volume of 70. L. What is the pressure of the gas in atmospheres if it's temperature is 30.0°C?

___ atm

1.77 atm

Explanation:

We have to check the values that gives the problem:

V= 70 L

mass =354.5 g

Molas weight= 70.9 g/mol

T=30 ºC

P= ?

We can find the moles of chlorine if we use the molar weight:

Now, we have the moles, volume, temperature therefore we can use the ideal gas equation:

We know the R value:

We have “K” units for the temperature, so we need to do the conversion:

With all the data we can plug the values into the equation:

I hope it helps!