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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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Ammonium phosphate ((NH4), PO is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H,PO,) with ammonia (NH;). What mass of ammonium phosphate is produced by the reaction of 5.3 of phosphoric acid? Be sure your answer has the correct number of significant digits.
Transcribed Image Text:Ammonium phosphate ((NH4), PO is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H,PO,) with ammonia (NH;). What mass of ammonium phosphate is produced by the reaction of 5.3 of phosphoric acid? Be sure your answer has the correct number of significant digits.
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston cylinder The temperature of the water bath is monitored, and it is determined from this data that 138. kJ of heat flows into the water bath system during the reaction. The position of the piston is also monitored, and it is determined from this data that the system does 243. kJ of work on the piston during the reaction. gases exothermic Is the reaction exothermic or endothermic? O endothermic O up Does the temperature of the water bath go up or down? O down neither O in Does the piston move in or out? O out O neither O absorb Does the reaction absorb or release energy? O release neither How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits.
Transcribed Image Text:A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston cylinder The temperature of the water bath is monitored, and it is determined from this data that 138. kJ of heat flows into the water bath system during the reaction. The position of the piston is also monitored, and it is determined from this data that the system does 243. kJ of work on the piston during the reaction. gases exothermic Is the reaction exothermic or endothermic? O endothermic O up Does the temperature of the water bath go up or down? O down neither O in Does the piston move in or out? O out O neither O absorb Does the reaction absorb or release energy? O release neither How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits.
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