January 2019 1 31 Report
Zesc mam zadanie z chemi trzeba odczytac te pierwiastki np 3N - 3atomy azotu
zad1.
5Mg
2KCl

3O²
4N
zad2.Napisz
3 atomy chloru
2 czasteczki bromu
1 czasteczka tlenku wapnia
zad3.
Policz atomy w czasteczkach
Li²S
5H²O
3NaOH
2H³PO⁴
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