Methane, CH4 , the major component of natural gas burns in air to form CO2 and H2O. What mass of water is formed in the complete combustion of 5.00 x 103 g of CH4? Why is the answer: 11.2 kg. Thank you.
Yes, the answer is approximately
Start with the balanced chemical equation
Now look at the mole ratio that exists between
In order to see how many moles of water are produced, you must determine how many moles of
According to the aforementioned mole ratio, the number of moles of water produced will be
Now just use water's molar mass to calculate the actual mass produced
Expressed in kilograms, this is equal to
If you round this to three sig figs, you'll actually get
Convert to grams.
I have assumed the mass of methane to be