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Laws of Mass Conservation

Calculate mas...

Question

Calculate mass of oxygen required to burn $1.6$ g of methane to form $C O_{2}$ and water.

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Solution

$CH_{4} + 2O_{2}\rightarrow CO_{2} +2 H_{2}O$
mass of Methane = 16 g
mass of 2 molecules of oxygen = 64 g
The equation shows that 16 g of methane requires 64 g of Oxygen
1.6g of methane requires $64 \times 1.6 / 16$ = 6.4 g of oxygen

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