Question

What mass of Carbon-dioxide will have the same number of oxygen atoms as are present in 72 grams of water?​

Answer 1

Answer:

1 mol of CO

2

=12+32=44 g

Number of oxygen in 1 molecule of CO

2

=2

Therefore, 44 g CO

2

contains 2 moles of oxygen

22 g CO

2

contains =

44

2

×22=1 mole oxygen atom

1 mole of CO=12+16=28 g

∴ 28 g CO contains 1 mol oxygen atom.