Question

$how \: many \: gram \: molecules \: in \: 16g \: oxyen$
​

Answer 1

Here, we are given with 16 g of oxygen. The number of molecules in 16 gm of oxygen are 0.5 (= 16/32 moles). Thus the number of molecules in 16 gm or 0.5 mole of oxygen gas are 0.5 x 6.023 x 10^(23) = 3.012 x 10^(23) molecules.