AP Chemistryeasymcq1 pt
A student needs the molar mass of calcium nitrate, Ca(NO₃)₂. What value should she use?
A.164.10 g/mol
B.102.09 g/mol
C.132.10 g/mol
D.148.10 g/mol
Explanation
Core Concept
Sum the atomic masses: Ca 40.08 + 2(N 14.01 + 3 × O 16.00) = 40.08 + 2(62.01) = 164.10 g/mol. The subscript outside parentheses multiplies everything inside.
Correct Answer
A164.10 g/mol
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