Question

быстро пожалуйста !!!!!!!!!!!!!!!!!!

Answer 1

1-3
2-4
3-4
4-3
5-3
6-1
7-
1)
Са - 34.5%
Si - 24%
O - 41.5%
2)
Fe - 23%
N - 17%
O - 60%
8 -
1)
m = 11.6875г
N = 4.14×10²³
2)
m = 29.3
N = 5.2×10²³