you are supplied with a gas containing 0.32g of oxygen. calculate the number of moles and number of molecules present in it

1 mole of oxygen gas will weigh 32 g and will have 6.023 * 10^23 molecules.

Therefore, 0.32 g of gas will have 0.01 moles of oxygen. 

0.32 g of gas will have 6.023 * 10^21 molecules of oxygen.