Asked by jeff

How many molecules are 100.00 grams of H2O?
Answered by DrBob222
How many moles do you have?
100g/molar mass H2O = ?? moles.
There are 6.022E23 molecules in 1 mole of anything. And you have ?? moles.
Answered by jennifer
200
Answered by Aloysius
100.00g H2O*(1mol H2O/18.02g H2O)*(6.022*10^23 molecules H2O/1 mol H2O)=3.3418423*10^24 molecules H2O or ~3.3418*(10^24) H2O molecules.
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