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O Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 °C and 755 mm Hg pressure. Heating the reac- tion mixture to evaporate the water and remaining HCl then gave a white crystalline compound, MCI, After dissolving the com- pound in 25.0 g of water, the melting point of the resulting solu- tion was-3.53 °C. (a) How moles of H, gas are evolved? Kamany (b) What mass of MCI, is formed?

O Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 °C and 755 mm Hg pressure. Heating the reac- tion mixture to evaporate the water and remaining HCl then gave a white crystalline compound, MCI, After dissolving the com- pound in 25.0 g of water, the melting point of the resulting solu- tion was-3.53 °C. (a) How moles of H, gas are evolved? Kamany (b) What mass of MCI, is formed?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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160 - please answer abc
(c) What is the molality of particles (ions) in the solution of MCI,? (d) How many moles of ions are in solution? (e) What are the formula and molecular weight of MCI? (f) What is the identity of the metal M?
Transcribed Image Text:(c) What is the molality of particles (ions) in the solution of MCI,? (d) How many moles of ions are in solution? (e) What are the formula and molecular weight of MCI? (f) What is the identity of the metal M?
12.160 Treatment of 1.385 g of an unknown metal M with an excess of 8. aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 °C and 755 mm Hg pressure. Heating the reac- tion mixture to evaporate the water and remaining HCl then gave a white crystalline compound, MCI, After dissolving the com- pound in 25.0 g of water, the melting point of the resulting solu- tion was-3.53 °C. (a) How moles of H, gas are evolved? many (b) What mass of MCI, is formed?
Transcribed Image Text:12.160 Treatment of 1.385 g of an unknown metal M with an excess of 8. aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 °C and 755 mm Hg pressure. Heating the reac- tion mixture to evaporate the water and remaining HCl then gave a white crystalline compound, MCI, After dissolving the com- pound in 25.0 g of water, the melting point of the resulting solu- tion was-3.53 °C. (a) How moles of H, gas are evolved? many (b) What mass of MCI, is formed?
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