Question

1: When the chemical equation, below, is properly balanced the coefficient of N2 is… NO +...

1:

When the chemical equation, below, is properly balanced the coefficient of N2 is…

NO + NH3   ⟶ N2 + H2O

A: 4

B: 5

C: 6

D: 3

E: 2

2:Which combination of reactants dissolved in water is most likely to produce a precipitate as a product in a “double-displacement”-type reaction?

A: (NH4)3PO4 + K2CrO4

B: AgCH3CO2 + KBr

C: KI + Zn(NO3)2

D: Fe(NO3)3 + LiCl

E: NaBr +MgCl2

3: Which of the following is not a redox reaction?

A: Li(s)    + 2 H2O(l) → 2 LiOH(aq)   + H2(g)

B: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)

C: MgS(aq) + 2LiCl(aq) → MgCl2(aq) + Li2S(aq)

D: P2H4(g) + H2O(l) + KCl(s) → PH3(g) + KOCl(aq)

E: 2 H2O(g) → O2(g) + 2 H2(g)

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