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What mass of water is produced from the complete combustion of 5.50×10−3g of methane?

Sagot :

lulu1991
The reaction equation is CH4 + 2O2 = CO2 + 2H2O. The ratio of mol number of water and methane is 1:2. The mol number of methane is 5.5*10^(-3)/16=3.4*10^(-4) mol. The mass of water is 18*3.4*10^(-4)*2=1.2*10^(-2) g.
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