calculate the number of atoms in 4g of He

The atomic mass of Helium is 4 u. Therefore, its molar mass is 4g. This means that the mass of 6.023 X 1023 atoms of He is 4g. Thus there are  6.023 X 1023 atoms in 4 g of He. 

  • 16

6.022 x10power23

  • 1

6.022x 1023  atoms

  • 0
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