What is the mass of 22.4 l of h2o at stp? a. 18.02 g/mol b. 1.24 g/mol c. 24 g/mol d. 100 g/mol

The  mass    of  22.4 L of  H2O    at  STP  IS    18.0  grams

      calculation

mass = moles x molar mas
Calculate  the   moles  of water  at  STP

At  STP   1  mole =22.4 L
what  about  22.4 l of  H2O

by  cross  multiplication

1mole  x22.4 L/22.4 L =  1 mole

molar mass  of water =  (1 x2) + 16  =18 g/mol

moles  is  therefore = 8 g/mol  x 1 mol  =  18   grams

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