The minimum amount of consumed per gram of reactant is for the reaction: (Atomic mass: Fe = 56, O = 16, Mg = 24, P = 31, C = 12, H = 1)

Question

The minimum amount of  consumed per gram of reactant is for the reaction: (Atomic mass: Fe = 56, O = 16, Mg = 24, P = 31, C = 12, H = 1)

Canvas Classes · Accepted Answer

Strategy:
 For each reaction, calculate the mass of Oxygen consumed per 1 gram of the primary reactant. The goal is to identify which fuel is most "oxygen-efficient" by mass.

Calculations per 1g reactant:
- (a) } \ce{P4}:  mol () reacts with  mol  (). Ratio .
- (b) Mg:  mol () reacts with  mol  (). Ratio .
- (c) Fe:  mol () reacts with  mol  (). Ratio .
- (d) Propane:  mol () reacts with  mol  (). Ratio .

Iron (Fe) requires the minimum amount of oxygen per gram.

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