How many molecules of water (formula mass = 18) are present in 36 grams of water?

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How many molecules of water (formula mass = 18) are present in 36 grams of water?

2007-04-09 13:14:30 · 3 answers · asked by Cindy B 2 in Science & Mathematics ➔ Chemistry

3 answers

36 grams of water are 2 times the formula weight so you have two moles of water. Now if you go and look up Avogadroes number and multiply it by two you will have your answer. I do not what to make this too easy for you.

2007-04-09 13:20:17 · answer #1 · answered by Bill G 2 · 0⤊ 0⤋

36 grams has 2 moles of water. Multiply by Avogadro's number, 6.02X10E23 molecules per mole and you are done

2007-04-09 20:18:34 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋

Easy stoichiometry! 2 Moles of water.

2007-04-09 20:17:50 · answer #3 · answered by Anonymous · 0⤊ 0⤋