A 1.850 g mixture of SrCO₃ and SrO is heated.The SrCO₃ decomposes to SrO and CO₂.What was the mass percentage of SrCO₃ in the mixture if the mass after heating is 1.445 g?

Question

Quizplus · Accepted Answer

The mass of SrCO3 that decomposed is 1.850 g - 1.445 g = 0.405 g. The mass percentage of SrCO3 in the mixture is (0.405 g / 1.850 g) * 100% = 21.9%.

A 1850 G Mixture of SrCO3 and SrO Is Heated

A 1850 G Mixture of SrCO₃ and SrO Is Heated