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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2.948 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.
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A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s)→→ Mg(NO3)₂(s) + H₂(9) ΔΗ = - 443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ. reaction Mg(NO3)₂ (s) + H₂ (g) → 2HNO3 (1) + Mg(s) 3Mg(NO3)₂ (s) + 3H₂(g) + 3H₂(g) → 6HNO3 (1) + 3Mg(s) HNO₂(1) + — Mg(s) → — Mg(NO₂)₂ (s) + —⁄H₂(g) AH kJ x10 X Ś
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2.887 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. (6) NH4Cl(s) → NH4Cl(aq) ∆H6 (measured) Your answer should have 3 sig figs
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