Answer:
A. 16.0 grams
B. 3.1 mol of oxygen
Explanation:
A.
The oxygen atom has mass = 2.66x10^-23g
A mole of oxygen atoms can be calculated as:
[2.66x10^-23/1 oxygen atom] x [6.023x10²³ oxygen atoms/1 mol]
= 16.0 grams of oxygen
So a mole of oxygen has 16.0 grams of O2
B.
For 0.050 kg of water, we have 16.0 grams
(0.050x10³g/kg )x (1mol/16)
= 3.1 mol of oxygen
So 3.1 mol of oxygen has mass which is equal to the mass of water.
