9.60g of a gas X occupies the same volume at 0.30g of hydrogen under the same condition calculate the molar of X (H=1)?

Answer 1

the volume is by moles

convert the H to moles (remember, its diatomic in the gas phase ... H2)

that many moles of X has the given mass

Answer 2

H=1
1×9.6÷0.3