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Balancing Equations
Test Description: Welcome
Instructions: Answer all questions to get your test result.
1) ____ Na + ____ H2O →____ NaOH + ____H2
A
2 Na + 2 H2O→ 2 NaOH + 1 H2
B
Zn + Pb(NO3)2→Zn(NO3)2 + Pb
C
6 CO2 + 6 H2O→ 1 C6H12O6 + 6 O2
D
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
2) ____ N2 + ____ H2→ ____ NH3
A
2 H2 + 1 O2→2 H2O
B
2 C8H18 + 25 O2 →16 CO2 + 18 H2O
C
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
D
1 N2 + 3 H2 → 2 NH3
3) Calcium hydroxide and phosphoric acid react to form calcium phosphate and water.
A
2 H2 + 2 NO →2 H2O + N2
B
3 Ca(OH)¬2 + 2 H3PO4 →Ca3(PO4)2 + 6 H2O
C
1 S8¬ + 12 O2 →8 SO3
D
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
4) ____ H2O + ____ O2 →____ H2O2
A
____ Na + ____ H2O →____ NaOH + ____H2
B
Sodium phosphate and calcium chloride react to form calcium phosphate and sodium chloride.
C
2 H2O + 1 O2 →2 H2O2
D
2 H2 + 2 NO →2 H2O + N2
5) Potassium metal and chlorine gas combine to form potassium chloride.
A
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
B
2 H2 + 1 O2 →2 H2O
C
2 AlBr3 + 3 Cl2 ←2 AlCl3 + 3 Br2
D
2 K + Cl2 →2 KCl
6) ____ AlBr3 + ____ K2SO4 →____ KBr + ____ Al2(SO4)3
A
Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.
B
2 AlBr3 + 3 K2SO4 →6 KBr + 1 Al2(SO4)3
C
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
D
1 N2 + 3 H2 →2 NH3
7) Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide.
A
Cu + 2 H2SO4 →CuSO4 + 2 H2O + SO2
B
Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide.
C
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
8) ____ NaBr + ____ CaF2 →____ NaF + ____ CaBr2
A
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
B
2 NaBr + 1 CaF2 →2 NaF + 1 CaBr2
C
Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide.
D
2 NaBr + 1 CaF2 →2 NaF + 1 CaBr2
9) ____ HCl + ____ CaCO3 →____ CaCl2 + ____H2O + ____ CO2
A
1 HNO3 + 1 NaHCO3 →1 NaNO3 + 1 H2O + 1 CO2
B
2 HCl + 1 CaCO3 →1 CaCl2 + 7H2O + 8 CO2
C
2 HCl + 1 CaCO3 →1 CaCl2 + 1 H2O + 1 CO2
D
4 P + 5 O2 →2 P2O5
10) Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas.
A
1 H2 + 2 NO →7 H2O + N2
B
2 H2 + 2 NO →2 H2O + N2
C
Cu + 2 H2SO4 ←CuSO4 + 2 H2O + SO2
D
2 NaBr + 1 CaF2 →2 NaF + 1 CaBr2
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