Question

Suppose that A and B form the compounds B2A3
and B2A. If 0.05 mole of B2A3 weighs 9 g and
0.1 mole of B2A weighs 10 g, the atomic weight of
A and B respectively are
(1) 30 and 40
(2) 40 and 30
(3) 20 and 5
(4) 15 and 20​

Answer 1

Answer:

40 and 30.............