Question

Calculate the number of Cu atoms in 0.635g of Cu

Answer 1

Answer:

no. of atoms =6.022*10^21

Step-by-step explanation:

given mass of Cu=0.635g

molar mass of Cu=63.5g

we can get no. of atoms as follows,

no. of atoms

=given mass /molar mass*6.022*10^23

=0.635/63.5*6.022*10^23

=0.01*6.022*10^23

=6.022*10^21 atoms

Answer 2

Answer:

6.022 x 10^21

Step-by-step explanation:

given mass of copper= 0.635g

molar mass of copper= 63.5g

no. of atoms= given mass/molar mass x avagadro no.

      = 0.635/63.5 x 6.022 x 10^23

      = 0.01 x 6.022 x 10^23

      = 6.022 x 10^21 atoms

HOPE IT HELPS!!!!!!!!!!!!!!!

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