Question

How many grams of oxygen are contained in a sample of H2O that also contains 3.85 moles of hydrogen atoms?

Answer 1

30.8 g oxygen

Step-by-step explanation:

There are 1/2 as many Oxygen moles as hydrogen moles in H2O

so there are 3.85 / 2 * 16 gm of oxygen = 30.8 gms oxygen