Question

Element A (atomic weight 12.01) and element B (atomic weight 16) combine to form a
new substance X. If two moles of B combine with one mole of A, then the weight of one mole of X is
A. 28.01 g
B. 40.02 g C.44.01g
D. 56.02g

Answer 1

Answer:

correct answer is option C 44.01g

Explanation:

atomic weight of A is 12.01g

atomic weight of B is 16g

they combine to form a new substance X

2 moles of B combine with A to form X

according to the question

the weight of one mole of X is,

A + 2B ---> X

12.01g + 2×16g ---> X

12.01g + 32g ---> X

44.01g ---> X

hence, the weight of one mile of X is 44.01g