What amount of h2o is produced by combustion of 32g of ch4?
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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
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