Questions 14 & 15 relate to the diagram in Figure 1 below.Mge)Zn)ZNSO4(ag)MgSO (2)1 mol dm-31 mol dm-3Figure 114. Which of these statements is true about the cell shown?A. The reaction at the zinc electrode is Zn(s) = Zn²* (aq) + 2e¯B. Electrons flow through the wire from the zinc to the magnesium electrodeC. The concentration of magnesium ions will increase in the magnesium half-cellD. The magnesium half-cell represents the cathode compartment15. Which of the following would cause the e.m.f of the cell to decrease?A. Increasing the surface area of the magnesiumB. Decreasing the cross-sectional area of the salt bridgeC. Decreasing the concentration of the MgSO4 solutionD. Decreasing the concentration of the ZnSO4 solution416. The reaction between L and M; L(g) + M(g)second order with respect to M. It may be inferred form this thatLMg) is zero order with respect to I ordA. if the concentration of L is doubled, the rate doublesB. the reaction rate is constantC. if the concentration of M triples, the rate remains the sameD. the rate equation is Rate = k[M]´17. The specific heat capacity of iron is 0.449 J g ' K -'. How much heat would be absorbed if29.0 g of iron is heated from 25 °C to 55 °C? 16. The reaction between L and M; L(g) + M(g)second order with respect to M. It may be inferred form this thatLMg) is zero order with respect to L andA. if the concentration of L is doubled, the rate doublesB. the reaction rate is constantC. if the concentration of M triples, the rate remains the sameD. the rate equation is Rate =k[M]°17. The specific heat capacity of iron is 0.449 J g - K'. How much heat would be absorbed if29.0 g of iron is heated from 25 °C to 55 °C?A. 391 JB. 1808 JC. 812 JD. 12.6 J18. What is the heat capacity of 200 g of nickel if the specific heat capacity is 0.54 kJ / kg / K?A. 0.108 kJ / KB. 0.108 J/ KC. 0.0265 kJ / KD. 40.8 g / K19. Which of the statements is TRUE about the heat capacity of an object?i.The heat capacity depends on the mass of the objectThe units for heat capacity is J or kJThe heat capacity depends on the specific heat capacity of the objectii.ii.A. ii & iiiB. i & iiiC. i & iiD. i, ii & iii20. Sodium hydroxide pellets are placed in a beaker of water and it is found that the beaker getshotter. Which of the following best identifies the system, surroundings and direction af heattransfer?Direction of heattransferSystemSurroundingsA. Sodium hydroxide pelletsSurrounding → SystemSystem → SurroundingSystem → SurroundingSurrounding → SystemBeakerB. WaterBeakerC. Sodium hydroxide pelletsWaterD.BeakerWater5

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Chemistry

14. Which of these statements is true about the cell shown?

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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