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Composition of Mixtures Practice Test
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Q1
A 4.00 g sample of a mixture of $$NaHCO_3$$ and $$Na_2CO_3$$ is reacted with excess hydrochloric acid. The reaction produces 0.985 L of $$CO_2$$ gas at 298 K and 1.00 atm. What is the mass percent of $$NaHCO_3$$ in the mixture? (Molar mass of $$NaHCO_3$$ is $$84.0 \text{ g/mol}$$; $$Na_2CO_3$$ is $$106.0 \text{ g/mol}$$).
A 4.00 g sample of a mixture of $$NaHCO_3$$ and $$Na_2CO_3$$ is reacted with excess hydrochloric acid. The reaction produces 0.985 L of $$CO_2$$ gas at 298 K and 1.00 atm. What is the mass percent of $$NaHCO_3$$ in the mixture? (Molar mass of $$NaHCO_3$$ is $$84.0 \text{ g/mol}$$; $$Na_2CO_3$$ is $$106.0 \text{ g/mol}$$).