Question

a gas cylinder of capacity of 20 decimeter cube is filled with gas X the mass of which is 10 gram . when the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 gram hence the relative molecular mass of the gas is??​

Answer 1

The computation are expressed below,

Given:x =20 dm

3=20 lt

mx=10gv H^2=2

lt mH2=2g

moles of x =2 lt22.414

lt mol=0.089 mol≈0.1 molthe relative mass is,mol of x=mass of xMolar mass of x ⇒0.1=2 gMolar mass of x Moalr mass of x

=2 g 0.1

mol=20 g