[" What wat the same number of molecules as contained in "12.3],[" IAne "]

What is the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen?

What is the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen?

Which contains the same number of molecules as 16 g oxygen

Which contains more number of molecules?

Which contains more number of molecules?

What is the number of molecules of CO_2 contains 8 g of O_2 ?