STANDARDChemistry-Mole Concept
STANDARD Chemistry Calculation of Number of Atoms MCQ Question
Type: MCQ-numerical-Medium
Total number of atoms present in 34 g of NH₃ is
A
4 × 10²³
B
4.8 × 10²¹
C
2 × 10²³
D
48 × 10²³
Correct Answer
Option D
Detailed Explanation
In 34 g of NH₃, there are 2 moles. Each mole contains 6.023 × 10²³ molecules. Each NH₃ molecule has 4 atoms. Thus, the total number of atoms is 4 × 2 × 6.023 × 10²³ = 48.18 × 10²³.
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