Question

3. How many grams of water will be produced from 15.0 grams of Methane? *

CH4 +2 02 → CO2 + 2H2O

Answer 1

CH4 + 2O2 = CO2 + 2H2O

According to molar weights :

16 gm CH4 + 64 gm O2 = 44 gm CO2 + 36 gm H2O

Since 16 gm CH4 produce 36 gm H2O

Hence 2.5 gmCH4 produce 36×2.5/16 gm H2O

= 5.265 gm of H2O
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