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The mass of one Avogadro number of helium atoms is?

Chemistry
JAMB 2021

The mass of one Avogadro number of helium atoms is?

  • A. 1.00gram
  • B. 4.00gram
  • C. 8.00gram
  • D. 6.00gram
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Correct Answer: Option B
Explanation

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.

There is an explanation video available below.

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Explanation Video

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