Question

Calculate the Number of moles in 12.8g of oxygen molecule

Answer 1

Answer:

1 mole 32molecules

_ moles 12.8

12.8 / 32

0.4 moles

Answer 2

Answer:

given mass=12.8g

molecular mass= 32g

number of moles will be = given mass/molecular mass = 12.8/32 = 0.4 moles