Question

calculate the number og grams of oxygen in o-lo mal
q​

Answer 1

Explanation:

10H2O contains 13 × 0.1 = 1.3 moles of oxygen atoms. Mass of oxygen atoms = 1.3 × 16 = 30.8 g

Answer 2

Answer:

1 mole of Na2CO3. 10H2O contains 13 moles of oxygen atoms.

0.1 mole Na2CO3. 10H2O contains 13 × 0.1 = 1.3 moles of oxygen atoms.

Mass of oxygen atoms = 1.3 × 16 = 30.8 g.