**Answer : The volume of helium gas is, 244.72 liters**

**Explanation : Given,**

Mass of helium gas = 43.7 g

Molar mass of helium gas = 4 g/mole

As we know that at STP, 1 mole of gas contains 22.4 liter volume of gas.

**First we have to calculate the moles of helium gas.**

**Now we have to calculate the volume of helium gas.**

As, 1 mole of helium gas contains 22.4 liter volume of gas

So, 10.925 mole of helium gas contains liter volume of gas

**Therefore, the volume of helium gas is, 244.72 liters**