PLEASE HELP ME Determine the number of H2O molecules in 837.4 g of H2O.
Answer in units of molec.

Divide 837.4 g by 18.015 g/mol to get moles of H2O

Multiply moles of H2O by 6.022 x 10^23 molecules/mol to get molecules (of H2O in 837.4 g)

Round off your final answer to 4 sig figs.

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