For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the ent of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last c- System Change AS O AS < 0 AS = 0 The water evaporates at a constant temperature of 77.0 °C. A few grams of liquid water (H,0). O AS > 0 not enough information O AS < 0 The nitrogen is cooled from 21.0 °C to 6.0 °C while the volume is held O AS = 0 A few moles of nitrogen (N,) gas. constant at 14.0 L. O AS > 0 not enough information O AS <0 The helium is cooled from 16.0 °C to -10.0 °C and is also compressed from a volume of 7.0 L to a volume of O AS = 0 A few moles of helium (He) gas. O AS > 0 2.0 L. not enough O information I Don't Know Submit 62022 McGraw Hill LLC AI Rights Reserved Terms of Use I Privacy Center Accessibility P Type here to search 99+ IA ооо с O O o o o o o o

For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the ent of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last c- System Change AS O AS < 0 AS = 0 The water evaporates at a constant temperature of 77.0 °C. A few grams of liquid water (H,0). O AS > 0 not enough information O AS < 0 The nitrogen is cooled from 21.0 °C to 6.0 °C while the volume is held O AS = 0 A few moles of nitrogen (N,) gas. constant at 14.0 L. O AS > 0 not enough information O AS <0 The helium is cooled from 16.0 °C to -10.0 °C and is also compressed from a volume of 7.0 L to a volume of O AS = 0 A few moles of helium (He) gas. O AS > 0 2.0 L. not enough O information I Don't Know Submit 62022 McGraw Hill LLC AI Rights Reserved Terms of Use I Privacy Center Accessibility P Type here to search 99+ IA ооо с O O o o o o o o

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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2.857 g of NH4Cl (53.19 g/mol) are added to 50.0 mL of water (18.02 g/mol, density = 1.00 g/mL) and the temperature changes from 22.30oC to 18.90oC. Use this information to calculate the enthalpy change (kJ/mol) for the reaction illustrated in equation 6 of the laboratory procedure. Use 4.18 J/(goC) as the specific heat of the solution. The equation is NH4Cl (s) --> NH4Cl (aq)
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Find the value of x in the following transformation (report the result as a whole number): Fe2O3(s) + 3C(graphite) --> 2Fe(s) + 3CO(g); ΔH = x kJ 4Fe(s) + 3O2(g) --> 2Fe2O3(s); ΔH = -1,403 kJ 2C(graphite) + O2(g) --> 2CO(g); ΔH = -193 kJ
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A student dissolves 10.3g of ammonium nitrate NH4NO3 in 300.g of water in a well-insulated open cup. He then observes the temperature of the water fall from 22.0°C to 19.3°C over the course of 3.1 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4NO3s -> NH+4aq + NO−3aq You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔHrxn per mole of NH4NO3.