Question

find the no. of mole for 8 gram of O2 molecules

Answer 1

Answer:

atomic mass

or

atomic weight

Answer 2

Answer: given mass=8g

Mar mass of O2 =16*2=32

No.of moles=given mass /molar mass

8/32=1/4

=0.25moles

Explanation:

So number of moles in O2 molecules is 0.25moles