Answer to Question #254870 in General Chemistry for hebba

General Chemistry

Question #254870

B₂H₆ + 3 O₂ → 2 HBO₂ + 2 H₂O What mass of O₂ will be needed to burn 3.3 mol of B₂H₆? MM( O2) = 32 g/mol

Expert's answer

According to the reaction:

n(O₂) = 3n(B₂H₆) "= 3 \\times 3.3 = 9.9 \\;mol"

m(O₂) "= 9.9 \\times 32 = 316.8 \\;g"

Answer: 316.8 g

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