Question

2.4 gram metal react with oxygen and form 4 gram oxide MO. What is atomic mass of metal (M) ?​

Answer 1

Answer:

Atomic mass = 24

Explanation:

Mass of metal = 2.4 g

Mass of metal oxide = 4 g

Mass of oxygen = 4 - 2.4

                           = 1.6 g

No. of moles of oxygen = No. of moles of metal

1.6/16 = 2.4/x ( where x is the atomic mass of M)

x = 2.4/0.1

x = 24