How many moles of water, #H_2O#, are produced from the reaction of 16 grams methane, #CH_4#. with an unlimited supply of oxygen, #O_2#?

#CH_4 +2O_2 ->CO_2 + 2H_2O#

1 Answer
anor277
Mar 25, 2018

Are there not #"TWO moles"# with respect to water?

Explanation:

You have already written the stoichiometric equation that illustrates the combustion of methane gas...

#CH_4(g) + 2O_2(g) rarr CO_2(g) + 2H_2O(l)#

And this tells you UNEQUIVOCALLY, that #16*g# of methane gas reacts with #64*g# of dioxygen gas to give #44*g# of carbon dioxide gas, and #36*g# of water. As always in a chemical reaction, MASS and charge are CONSERVED. What does this mean in the given context?

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