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Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3 · ¤H2O, where r is the number of moles of H2O per mole of Na2CO3. When a 2.046 – g sample of washing soda is heated at 25 °C, all the water of hydration is lost, leaving 0.758 g of Na2CO3.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3 · ¤H2O, where r is the number of moles of H2O per mole of Na2CO3. When a 2.046 – g sample of washing soda is heated at 25 °C, all the water of hydration is lost, leaving 0.758 g of Na2CO3.

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 65QAP: Natural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU....
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What is the value of x?
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Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3 · ¤H2O, where z is the number of moles of H20 per mole of Na2CO3. When a 2.046 - g sample of washing soda is heated at 25 °C, all the water of hydration is lost, leaving 0.758 g of Na2CO3.
Transcribed Image Text:Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure. Its formula can be written as Na2CO3 · ¤H2O, where z is the number of moles of H20 per mole of Na2CO3. When a 2.046 - g sample of washing soda is heated at 25 °C, all the water of hydration is lost, leaving 0.758 g of Na2CO3.
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