Question

17. Elements A and B form two compounds B A, and
BA. 0.05 moles of BA, weight 9.0 g and
0.10 mole of B A weight 10 g atomic weight of A
and B are
(1) 20 and 30
(2) 30 and 40
(3) 40 and 30
(4) 30 and 20​

Answer 1

Answer:

option a 20 and 30. ok bro mark me as excellently

it can be wrong

Answer 2

Explanation:

Molar mass of B

2

A

3

=

0.05

9

=

5

900

⇒2B+3A=180

Molar mass of B

2

A=

0.1

10

=100

⇒2B+A=100

Solving eq(1) and (2)

2A=80

A=40

B=30