Question

How many molecules of water are produced by the combustion of 3.00 g of methane

Answer 1

Answer:

3/8 NA = 3/8 × 6.023 × 10^23 molecules of H2O

Explanation:

CH4 + 2O2 -----> CO2 + 2H2O

So, we can easily conclude that 1mole of CH4 gives 2mole of H2O.

3.0g of CH4 = 3/16 moles

therefore , H2O produced = 2× 3/16 moles

= 3/8 moles

= 3/8 NA molecules