Multiple Choice
Which of the following are combination reactions?
1.CH4 (g) + O2 (g) → CO2 (g) + H2O (l)
2.CaO (s) + CO2 (g) → CaCO3 (s)
3.Mg (s) + O2(g) → MgO (s)
4.PbCO3 (s) → PbO (s) + CO2 (g)
A) 1, 2, and 3
B) 2 and 3
C) 1, 2, 3, and 4
D) 4 only
E) 2, 3, and 4
Correct Answer:
Verified
Correct Answer:
Verified
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