Question

calculate the
percentage of carbon and oxygen in carbon dioxide?
Calculate the percentage of car
(C=12, 0=16)
Find out the molecular mass of...
(a) H2O2
(b) H2SO4
(H=1, S=32, 0 = 16, Ca = 40)
(c) CaCO3​

Answer 1

Explanation:

molecular mass of carbon dioxide=12+16*2

=12+32=44

percentage of carbon =12*100/44

= 27.28%

percentage of oxygen= 32*100/44

= 72.72%

(a) molecular mass of H2O2=1*2+16*2

=2+32=34gm

(b) molecular mass of H2SO4=1*2+32+16*4 =2+32+ 64 =98 gm

(c) molecular mass of CaCO3= 40+12+16*3= 40+12+48= 100 gm