Question

Calculate amount of water produced by combustion of 32g of methane

Answer 1

Answer:

CH4 + 2O2 = CO2 + 2H2O (heat)

Molar mass of CH4 is 16g`mole (12+4)

32g means 2 moles.

Moles = mass /molar mass

2 = 32/16

Stoichemoetry of CH4 to O2 is 1:2

That means if 2 moles of CH4 present 4 moles of H2O formed.

Molar mass of O2 is 18g`mole.

moles × molar mass = mass of H2O

4 × 18. =. 72g of H2O formed

Answer 2

13kg

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