Question

find the mass of oxygen in 3 moles of carbon dioxide​

Answer 1

3 moles of Carbon di Oxide will contain 6 atoms of Oxygen as 1 mole of Carbon di Oxide contains 1 atom of Oxygen.

So,

→Mass of 6 Oxygen atoms

→ 6 * Mass of 1 Oxygen atom

→ 6 * 16g ( Mass of 1 Oxygen Atom is 16 )

→ 96 g

So, the answer will be 96 gram.

Thank you.