I need help!?

2 ⤊

1.80g of water contains how many moles of hydrogens?

2007-11-08 12:51:10 · 2 answers · asked by Mio 2 in Science & Mathematics ➔ Chemistry

2 answers

Water is one oxygen, 2 hydrogens, and that gives you a molecular weight of 18 g/mol. If you have 1.8 grams, you have 1.8/18 = 0.1 moles of water. Each mol of water has two moles of Hydrogen, so in your sample, there are 0.1 x 2 = 0.2 moles of Hydrogen.

2007-11-08 13:03:00 · answer #1 · answered by Kevin B 2 · 1⤊ 0⤋

Atomic weights: H=1 O=16 H2O=18

1.80gH2O x 1molH2O/18gH2O x 2molH/1molH2O = 0.2 moles H atoms

2007-11-08 20:55:38 · answer #2 · answered by steve_geo1 7 · 1⤊ 0⤋