Question

calculate the number of moles for the following a 12.046 into 10 ki power 23 number of helium atom b 56 gram of helium​

Answer 1

Answer:

number of moles=n=

molecular weight

weight

Also, number of molecules =n×6.022×10

23

1. Moles of Cu=

6.023×10

23

12.046×10

23

=2 moles

2. Moles of Iron =

55.9

27.95

=0.5 moles

3. Moles of CO

2

=

6.023×10

23

1.51×10

23

=0.25 moles