Mole ConceptMedium
Question
A compound contains 7 carbon atoms, 2 oxygen atoms and 9.96 × 10–24 g of other elements. The molecular mass of compound is (NA = 6 × 1023)
Options
A.122
B.116
C.148
D.154
Solution
Molecular mass = 7 × 12 + 2 × 16 + (9.96 ×10−24 × 6 × 1023) ≈ 122
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