exercitiul 1.
1. 2 inmultit A Al+1 ori A S+4ori AO4=2 ori 1+26+4 ori 16=2+26+64=92
MIU ESTE =92g/mol
2 ori A Ca+1 ori A O=2 ori 1+40+16=2+56=58
miu=58g/mol
2 ori A Ca+2 ori A Br=2 ori 2+40+79=4+119=123
miu=123g/mol
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exercitiul 1.
1. 2 inmultit A Al+1 ori A S+4ori AO4=2 ori 1+26+4 ori 16=2+26+64=92
MIU ESTE =92g/mol
2 ori A Ca+1 ori A O=2 ori 1+40+16=2+56=58
miu=58g/mol
2 ori A Ca+2 ori A Br=2 ori 2+40+79=4+119=123
miu=123g/mol