Biogas contains CH4. How much mass of dioxygen is needed to burn 2kg o

1.	Biogas contains CH4. How much mass of dioxygen is needed to burn 2kg of it?
Answer» 1 mol CH4 = 12+4 =16g1g=1÷16mol 1kg = 1÷16×2000 = 125 mol1 mol CH4 requires 2 mol of O2.Therefore, 125 mol of CH4 requires O2 = 125 ÷2 = 62.5 mol OR62.5 × 16 = 1000 g OR 1Kg.

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