What weight of oxygen gas will contain the same number of molecules as `56` g of nitrogen gas ? `(O = 16 u , N = 14 u )`

Which contains the same number of molecules as 16 g of oxygen :

Which contains the same number of molecules as 16 g oxygen

7g of nitrogen contains the same number of molecules as

How many grams of oxygen gas contain the same number of molecules as 16 grams of sulphur dioxide gas ? (O = 16 u , S = 32 u)

The gas having same number of molecules as 16g of oxygen is

Calculate the number of molecules in 14g of nitrogen gas.

Which of the gases contains the same number of molecules as that of 16 g oxygen?