March 2022 0 4 Report
Zad. 1 Co oznaczają symbole:
5 O2
2Mg
7 Pb
Ca
5 H2O
2Fe
3 H2
10 Cu
3 N2
6 Cl2
4 atomy glinu
5 cząsteczek tlenu
2 cząsteczki tlenu wapnia

3 atomy cynku

5 cząsteczek wodoru

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