Ответ:
1. Fe(OH)3=56+17×3=107
2. K2CO3=39×2+12+16×3=138
3. CuCl2=64+35,5×2=135
4. K2SO4=39×2+32+16×4=174
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Answers & Comments
Ответ:
1. Fe(OH)3=56+17×3=107
2. K2CO3=39×2+12+16×3=138
3. CuCl2=64+35,5×2=135
4. K2SO4=39×2+32+16×4=174