Question

Какая масса негашенной извести может быть получена из 3 кг карбоната кальция

Answer 1

330 нетто. .        хотя подожди щас лучше решу

Answer 2

Calculating the Mass of Unslaked Lime from Calcium Carbonate

To calculate the mass of unslaked lime (calcium oxide) that can be obtained from 3 kg of calcium carbonate, we can use the molar masses of the compounds involved and the stoichiometry of the reaction.

1. Molar Mass of Calcium Carbonate (CaCO3): - The molar mass of calcium carbonate (CaCO3) is 100.09 g/mol.

2. Molar Mass of Calcium Oxide (CaO): - The molar mass of calcium oxide (CaO) is 56.08 g/mol.

3. Stoichiometry of the Reaction: - The balanced chemical equation for the thermal decomposition of calcium carbonate is: ``` CaCO3(s) -> CaO(s) + CO2(g) ```

- From the balanced equation, we can see that 1 mole of calcium carbonate produces 1 mole of calcium oxide.

4. Calculation: - To find the mass of unslaked lime (CaO) produced from 3 kg of calcium carbonate, we can use the following steps: - Convert 3 kg to grams: 3 kg = 3000 g. - Calculate the number of moles of calcium carbonate: ``` moles of CaCO3 = mass of CaCO3 / molar mass of CaCO3 = 3000 g / 100.09 g/mol ``` - Since the stoichiometry of the reaction is 1:1, the number of moles of calcium oxide produced will be the same as the number of moles of calcium carbonate. - Calculate the mass of calcium oxide produced: ``` mass of CaO = moles of CaCO3 * molar mass of CaO = moles of CaCO3 * 56.08 g/mol ```

5. Result: - The mass of unslaked lime (calcium oxide) that can be obtained from 3 kg of calcium carbonate is calculated to be the same as the mass of the calcium carbonate, which is 3000 g.

Conclusion

Based on the calculations, the mass of unslaked lime that can be obtained from 3 kg of calcium carbonate is 3000 grams.