Question
What is number of hydrogen molecules needed to synthesize 3.4 g of ammonia by reaction with nitrogen?
MHT CET
Chemistry
Some Basic Concepts of Chemistry
2026
MHT CET 2026 (15 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 6.022 10^ 23
- B. 1.2044 10^ 23
- C. 1.8066 10^ 23
- D. 1.8044 10^ 24
Answer
C. 1.8066 10^ 23
Step-by-step solution
The balanced chemical equation for the synthesis of ammonia is: N_2 + 3H_2 2NH_3 Molar mass of NH_3 = 14 + 3 1 = 17 g/mol Moles of NH_3 to be synthesized = 3.4 17 = 0.2 mol From the balanced equation, 2 moles of NH_3 require 3 moles of H_2. Moles of H_2 required = 3 2 0.2 = 0.3 mol Number of H_2 molecules = 0.3 6.022 10^ 23 = 1.8066 10^ 23 Answer: 1.8066 10^ 23
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