posted by ana on .
How many grams of water (H_2O) have the same number of oxygen atoms as 1.0 (mol} of oxygen gas?
atomic mass of H is 1 and O is 16,
so H2O has a molar mass of 18.
Oxygen gas is O2, with a molar mass of 32. So 1.0 mole of oxygen gas has 6.02x10^23 molecules = 12.04x10^23 oxygen atoms. how do i go further?
No, you are given a mole of oxygen atoms, not oxygen gas. One mole of oxygen atoms O makes 1/2 mole of O2
H2O means two H atoms for each O atom. So if you have a mole of O, you must have two moles of H.
You then have one mole of H2O
mass= mass H2 + mass O= 2+16=18
well my prof. provided me with this info..
we are students who are struggling. we are not here to get answers but we need help step by step. everybody is not same