2006-11-15 11:00:21 · 3 answers · asked by mike g 1 in Science & Mathematics ➔ Chemistry
there are .833 moles. divide the mass by 18 (2 hydrogens + 1 oxygen) oxygen= 16g/mole Hydrogen = 1 g/mole
2006-11-15 11:02:21 · answer #1 · answered by jrtootsiepop 3 · 0⤊ 0⤋
If you mean how many moles of water then the answer is a bit under one mole. One mole of water is 18 grams. To get the exact amount of moles divide 15/18.
If you mean how many total moles considering the different constituents...First find the molar mass of one mole of hydrogen, then the molar mass of one mole of oxygen. Divide by the given ratios and that will give you the total # of moles.
2006-11-15 19:04:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
you have 15 grams and the molar mass of water is 18 g per mole for do the following:
Divide 15/18 to get the number of moles you contain in your sample
15/18= 0.83 mol
2006-11-15 19:05:32 · answer #3 · answered by gordon_benbow 4 · 0⤊ 0⤋