1.

Please tell me the answer!​

Answer»

Mass of the MOLECULE of hydrogen atom is= 3.332×10⁻²⁷ kg.
We KNOW that, 1 kg mol of hydrogen gas = 6.02×10²⁶ molecules of hydrogen
So

3.332×10⁻²⁷ × 6.02×10²⁶
2kg is ANSWER



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