The mass of one Avogadro number of helium atoms is?

  • A 1.00gram
  • B 4.00gram
  • C 8.00gram
  • D 6.00gram
jamb 2021chemistry

The correct answer is B. 4.00gram

Avogadro's number is an absolute number: there are 6.022×10\(^23\) elementary entities in 1 mole.

 helium has a molar mass of 4.0 grams per mole. So one mole of helium has a mass of 4.0 grams.

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