1.

The minimm amount of O_(2)(g) consumed per gram of reactant is for the reaction : (Given atomic mass : Fe = 56, O = 16, Mg = 24, P = 31, C = 12, H = 1)

Answer»

`C_(3)H_(8)(g) + 5 O_(2)(g) to 3 CO_(2)(g) + 4 H_(2)O(l)`
`P_(4)(s) + 5 O_(2)(g) to P_(4)O_(10)(s)`
`4 Fe(s) + O_(2)(g) to 2 FeO_(3)(s)`
`2 Mg(s) + O_(2)(g) to 2 MGO(s)`

ANSWER :C


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