Question

Question 4 point

CH2-CO-THEO
149.65 mole of methane reacts with oxygen to produce carbon dioxide and water, what mass of water is produced
174 gram
425 gram
343 gram
-154 gram

Answer 1

`5393.4gH_2O`

Step-by-step explanation:

Hello there!

In this case, for the described chemical reaction, we can write:

`CH_4+2O_2\rightarrow CO_2+2H_2O`

Thus, by considering the 1:2 mole ratio of methane to water, and the molar mass of the latter (18.02 g/mol), the following is useful to calculate the mass of water that is produced:

`149.65molCH_4*(2molH_2O)/(1molCH_4) *(18.02gH_2O)/(1molH_2O)`

Which is equal to:

`5393.4gH_2O`

Which is not among the choices.

Regards!