shiwvcponya shiwvcponya

30-07-2016
Chemistry

Answered

calculate the number of atoms in . (a) 52 moles of He. (b) 52 g of He. (c) 52 u of He

Verified Answer :

Hussain514 Hussain514

04-08-2016

Atomic mass of Helium is 4u = 2protons + 2 Neutrons = 1 atom
No. of atoms in 52u = 52/4 = 13 atoms

52g of heliume
6.02210^2352/4 atoms of he
7.82910^24 atoms of he

1mole of he =6.0231023

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