THEMAN31 THEMAN31

08-06-2018
Chemistry

contestada

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

Respuesta :

kenmyna kenmyna

17-06-2018

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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