(a) How many moles of dioxygen are present in 64g of dioxygen?
(Molecular mass of dioxygen is 32)
(b) Calculate the amount of carbon dioxide formed by the complete combustion of 80 g of methane
aspertheequationCH4 +2O2 →CO2 +2H2O (Atomicmasses:C=12u,H=1u,O=16u)
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Explanation:
(a) No. of Moles = Given mass
GMM
= 64
32
= 2 mol
------------
(b) 16 g CH4 → 44 g CO2
80 g CH4 → ? g CO2
16×5 g CH4 → 44×5 g CO2
•°• 80 g CH4 → 220 g CO2
The amount of Carbon dioxide formed - 220 g
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