please answer questions 31-38. 31. chem3t 8.1-39 (Points: 2.5) In the process kn

Question

please answer questions 31-38. 31. chem3t 8.1-39 (Points: 2.5) In the process known as osmosis, __________ moves through a semipermeable membrane into an area of __________ concentration. a. solute; higher solute b. solvent; lower solute c. solvent; higher solvent d. solute; lower solute e. solvent; lower solvent 32. chem3t 8.1-33 (Points: 2.5) How many grams of glucose are needed to prepare 400. mL of a 2.0%(m/v) glucose solution? a. 800. g b. 8.0 g c. 200. g d. 2.0 g e. 0.0050 g 33. chem3t 8.2-2 (Points: 2.5) NaCl can be classified as a __________. a. liquid b. gas c. weak electrolyte d. nonelectrolyte e. strong electrolyte 34. chem3t 8.1-21 (Points: 2.5) An increase in the temperature of a solution usually a. increases the boiling point. b. decreases the solubility of a solid solute in the solution. c. increases the solubility of a solid solute in the solution. d. decreases the solubility of a liquid solute in the solution. e. increases the solubility of a gas in the solution. 35. chem3t 8.1-19 (Points: 2.5) When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is a. polar. b. unsaturated. c. saturated. d. nonpolar. e. dilute. 36. chem3t 6.1-18 (Points: 2.5) In this reaction, what is the correct coefficient for sodium chloride? Pb(NO3)2(aq) + NaCl(aq) ? PbCl2 (s) + NaNO3(aq) a. 1 b. 2 c. 3 d. 4 e. 5 37. chem3t 6.1-35 (Points: 2.5) What is the molar mass of copper(II) sulfate, CuSO4? a. 159.6 g b. 319.2 g c. 16.0 g d. 63.6 g e. 111.6 g 38. chem3t 8.1-52+ (Points: 2.5) When 200. mL of water are added to 100. mL of 12% KCl solution the final concentration of KCl is (Assume total volume of 300mL) a. 36%. b. 4.0%. c. 6.0%. d. 12%. e. 8.0%. 39. chem3t 8.1-62 (Points: 2.5) What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH? a. 750 L b. 0.075 L c. 0.75 L d. 0.083 L e. 0.25 L 40. chem3t 6.1-76 (Points: 2.5) Any reaction that absorbs 150 kcal of energy can be classified as __________. a. reduction b. endothermic c. exothermic d. oxidation e. activated

Explanation / Answer

Coefficient Standard Error t Stat P-value Lower 95% Upper 95% Intercept b0 74.771 16.7626 4.4610 0.0002 40.2540 109.3003 ERA b1 -12.3206 3.2066 -3.8423 0.0007 -18.9247 -5.7166 Run Scored b2 0.08433 0.0079 10.6414 9.0114E-11 0.0680 0.1007 Hits Allowed b3 -.0107 0.0163 -0.6563 0.5176 -0.0441 0.0228 Saves b4 0.2731 0.1203 2.2703 0.0321 0.0254 0.5208

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