The mass of one Avogadro number of helium atoms is?
A
1.00gram
B
4.00gram
C
8.00gram
D
6.00gram
Verified Correct Answer: B.
Chemical Principles & Mechanism
Avogadro's number is an absolute number: there are 6.022\times10\(^23\) 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.
Source: WAEC / JAMB / NECO Classroom Archive (Record #60499)