Question

12g M2O3 contains 8g of metal. Atomic mass of metal is. Answer is 48 . But solve the answer by explanations.​

Answer 1

Answer:

okkkkkkkkkkkkkkkkkkkkkkk

Answer 2

Given: $12g {\text M_2O_3}$ contains $8g$ of metal.

To find: We have find the atomic mass of the metal.

Solution:

Atomic mass of oxygen$=16$

Here three oxygen atoms are present so, total atomic mass $=16\times 3\\=48$

$12g {\text M_2O_3}$ contains $8g$ of metal.

The amount of oxygen is$=(12-8)\\=4g$

Now, $4g$ of oxygen has total atomic mass $48g$

$8g$ of metal has total atomic mass$=\dfrac{8\times48}{4}\\=96$

Atomic mass of the metal can be given as-

$=\dfrac{96}{2}\\=48$

Atomic mass of metal is $48$