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Chiomatn93
What is the mass (in grams) of one molecule of H2O? Express your answer using scientific notation with two decimal places.
do you know avagadro's number?
ok do you know the mass number of H2O? if we have a mole of molecules, the total mass is the value of the mass numbers in grams ex. a mole of helium atoms would be 4g so if we wanted to determine the mass of a single helium atom in grams, we could just divide 4g by avagadro's number
mol of O- 16g mol of 2H- 2g mol of H20- 18g