How many moles of water (H2O) are present in a beaker containing 45. 9 g H2O? Give your answer to the correct number of significant figures. (Molar mass of water = 18. 02 g/mol) 45. 9 g H2O = mol H2O.

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community