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When balanced, which equations would have the coefficient 3 in front of the any of the reactants? Check all that apply.

A. AgBr + GaPO4 → Ag3PO4 +GaBr3
B. H2SO4 + B(OH)3 → B2(SO4)3 + H2O
C. Fe + AgNO3 → Fe(NO3)2 + Ag
D. C2H4O2 + O2 → CO2 +H2O

Respuesta :

The answers are A and B, I just took the test.

transitionstate

Answer:

                  Equation A and Equation B will have the coefficient 3 in front of AgBr and H₂SO₄ respectively.

Explanation:

Equation A:

Unbalanced:    AgBr + GaPO₄    →    Ag₃PO4 + GaBr₃

Balanced:        3 AgBr + GaPO₄    →    Ag₃PO4 + GaBr₃

Equation B:

Unbalanced:   H₂SO₄ + B(OH)₃    →    B₂(SO₄)₃ + H₂O

Balanced:        3 H₂SO₄ + 2 B(OH)₃    →    B₂(SO₄)₃ + 6 H₂O

Equation C:

Unbalanced:    Fe + AgNO₃ → Fe(NO₃)₂ + Ag

Balanced:        Fe + 2 AgNO₃ → Fe(NO₃)₂ + 2 Ag

Equation D:

Unbalanced:    C₂H₄O₂ + O₂    →    CO₂ + H₂O

Balanced:        C₂H₄O₂ + 2 O₂    →   2 CO₂ + 2 H₂O


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