Question

plZ tell me the answer fast​

Answer 1

a) molecular mass =

$40 + 2(2 \times 1 + 40 + 4 \times 16)$

= 252

% of phosphorus =

$40 \div 252 \times 100$

=15.87%

Answer 2

weight of hydrogen phosphate=95.978

weight of phosphorus=30.97.......

answer=95.978/30.973761998=3.0.......

then 61.94*100/234.05=26.46

similarly do that in the second equation