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Estequiometria,mol,massa,molécula
Quando o carbonato de calcio,CaCO3,é atacado por HCl,forma água e CO2,segundo as equações abaixo:
CaCO3 + 2HCl —> CaCl2
H2CO3 –> H2O + CO2
Se 70,0 g de CaCO3 reagem de acordo com a equação acima, são formadas quantas (a) moléculas de CO2, (b) gramas de água, (c) moléculas de cloreto de cálcio (d) gramas de dióxido de oxigênio?
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