Question

Va rog sa ma ajutați!!! La ex 2.2​

Answer 1

H2SO4

M=2 . A H + A S + 4 . A O

M=2 .1 + 32 + 4 .16=34+ 64

                             = 98-------> 98g/moli

98 g -------2 g H----------32 g S----------64g O

100 g----------x------------------y--------------z

x=100.2 : 98=2,04 % H

y=100.32 : 98=32,65 % S

z=100.64 : 98=65,3 1% O

[proba-----> 2,o4%+32,65% + 65,31%=100%]