Questions by LolaSilas675

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1 answer 34 views

A chemistry student needs to determine the percentage of calcium carbonate (CaCO3) present in a mixture of calcium carbonate and calcium phosphate. The student has the following information: A 1.00-gram sample of the mixture was dissolved and reacted with excess hydrochloric acid (HCl), producing 0.236 grams of carbon dioxide (CO2) gas. The balanced chemical equation for the reaction is: CaCO3 + 2HCl → CaCl2 + CO2 + H2O. The student also knows that the molecular weight of CaCO3 is 100.09 g/mol and that of Ca3(PO4)2 is 310.18 g/mol. What is the percentage of calcium carbonate in the mixture?

asked Jan 22 in Analytical Chemistry

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1 answer 13 views

According to the validity in correlational research, what does it refer to?

asked Jan 15 in Psychology

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What is the enlarged tip of the penis called?

asked Jan 6 in Science

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1 answer 22 views

What happens to a substance in a liquid state when the temperate is lowed?

asked Jan 6 in Science

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1 answer 32 views

Are coral reefs found in warm or cold water?

asked Dec 30, 2024 in Science

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1 answer 23 views

An example of hydrolysis working within our bodies is the process of what?

asked Dec 27, 2024 in Science

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