Correct Answers
1. Which set of diagrams shows a balanced chemical equation? correct
answer: C. Diagram C
2. Which set of coefficients would balance the following equation? Mg
+ AlCl3 = Al + MgCl2 correct answer: B. 3Mg + 2AlCl3 = 2Al + 3MgCl2
3. Which set of coefficients would balance the following chemical
equation? H3PO4 + RbOH = H2O + Rb3PO4 correct answer: D. H3PO4 +
3RbOH = 3H2O + Rb3PO4
4. Silver (Ag) has a molar mass of 107.8682g, nitrogen has a molar
mass of 14.0067g and oxygen has a molar mass of 15.9994g. What
is the molar mass of silver nitrate, AgNO3? correct answer: A.
169.8731 g
5. Why is the following equation invalid? Al + 2O2 = Al2O3 correct
answer: D. All of the above
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