Question

please help me in this as fast as possible plzzz..... ​

Answer 1

Answer:

a.1.

H3PO4 = (1×3)+31+(16×4)

=3+31+64

=98u.

2.

FeCl2=56+(2×35.5)

=56+71

=128u.

b.C+O2 = CO2

24gm of carbon is used thus 32gm of oxygen will be used

adding we get 24+32=56gm

thus 56gm of CO2 will be formed.

Hope this helps you!!!

Mark brainliest if it is helpful.