Question

A sample of ca3(po4)3 contain 3.1g phosphorus then weight of ca in the sample ( at. wt ca=40, p=31)
a) 6gm
b) 4gm
c) 2gm
d) 5.56gm
plz..explain step by step​

Answer 1

Explanation:

3(31) gm of P gives 3(40) gm of CA

then 3.1gm of P gives 3(40)×3.1/3(31)

=4gm