Question

calculate the % of underlined elements in the following compounds . (H= 1, C=12, N=14, 0=16, B=11 , Na= 23, Pt= 195).
i) (NH⁴)² Pt Cl6 (underline Pt)
ii) Na² B⁴ O7. 10 H²O (underline B⁴)


pls answer this it's emergency​

Answer 1

Answer:

don't know about it as I have not studied it