Question

convert into mole 12g of oxygen gas​

Answer 1

Answer:

molar mass of O2=2*16=32g.

number of moles =given mass/molar mass.

=12/32=0.375mole

Answer 2

Answer:

MOLECULAR MASS OF O²=32U

Mass of O²=12g

No. of moles of O²= mass/ molecular mass

=12/32=3/8

=0.375 moles