Ile gramów Ca znajduje się w 150 g węglanu wapnia? Stosunek masowy pierwiastków wynosi m
100g CaCO3 -------- 40g Ca
150g CaCO3 -------- X
X=60g Ca
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100g CaCO3 -------- 40g Ca
150g CaCO3 -------- X
X=60g Ca