Calculate the number of atoms present in 52 units of He please ?

1 Answer
anor277
May 31, 2017

"The relative atomic mass of helium is FOUR".

Explanation:

"Relative atomic mass"="Mass of atom"/(1/12"th the mass of a """^12C" atom")

"4 atomic mass units"/("1 atomic mass unit"xx1/12)=4

And multiplication by "Avogadro's number" gives the equivalent mass in grams........

So if you have a 52*"amu" mass of helium, you should reasonably have THIRTEEN helium atoms; unlucky for some. Agreed?

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