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Question 4 Which molecule will form the largest number of particles when dissolved in water? a....
Which solid, when dissolved in water, would cause the solution to have the greatest change in...
Which solid, when dissolved in water, would cause the solution to have the greatest change in boiling point?" A. CaCl2 B. Sugar C. Na3PO4 D. NaCl
When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure calorimeter, the...
When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure calorimeter, the temperature rose from 25.0 C to 38.7 C. If the heat capacity of the solution and the calorimeter is 1258 J/C, what is the enthalpy change when 0.710 mol of calcium chloride dissolves in water? The solution process is CaCl2(s) --> Ca2+(aq) + 2Cl–(aq)
A reaction is done by dissolving 5.687 g sodium phosphate and 7.533 g of calcium chloride...
A reaction is done by dissolving 5.687 g sodium phosphate and 7.533 g of calcium chloride in water. These react to form solid calcium phosphate and sodium chloride (this remains dissolved in water). a) Write a balanced equation for the reaction; don’t forget states of matter b) How many grams of calcium phosphate are expected to form if all the sodium phosphate reacts? c) How many grams of calcium phosphate are expected to form if all the calcium chloride reacts?...
number 3 1 VOIULUI B) solvent C) ion (D) solute E) electrolyte 3) When the weak...
number 3
1 VOIULUI B) solvent C) ion (D) solute E) electrolyte 3) When the weak electrolyte HF is dissolved in water, the solution contains A) nothing B) all H+ and F-ions and no HF molecules C) only F-ions D) mostly HF molecules and a few H+ and F-ions E) all HF molecules 4) Calcium chloride reacts with sodium hydroxide to form solid calcium hydro balanced net ionic equation is_ A) CaCl2(aq) + 2NaOH(aq) - CaOH(s) + NaCl(aq). B) Ca+2(aq)...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a coffee- cup calorimeter (at constant pressure), the temperature rose from 25.0°C to 38.7°C. The dissolution process is: CaCiz(s) - Ca2+ (aq) + 2C1-(aq) The heat capacity of the solution and the calorimeter is 1258 J/°C. The molar mass of CaCl2 is 110.98 g/mol. 1) Determine the heat that was absorbed by the solution and calorimeter. (1 point) 2) Determine the heat that was released...
answer 1-4 Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The...
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
4. When the weak acid HN; (K4 = 1.9 x 10-) is dissolved in water, which...
4. When the weak acid HN; (K4 = 1.9 x 10-) is dissolved in water, which species has the largest molar concentration? A OH B. H30+ C. HN3 D. N3
Question 40 5 pts Choose the compound from the set that can be classified as a...
Question 40 5 pts Choose the compound from the set that can be classified as a salt. acetic acid (CH3CO2H) • magnesium bromide (MgBr2) sodium hydroxide (NaOH) glucose (C6H1206) Which of the following compounds when dissolved in water, would form an aqueous solution that would not conduct an electric current? CSF . HOCIO CH3COCH3 CuBr2
Which of the following mixtures, when dissolved in 1.0 L of water, would function as a...
Which of the following mixtures, when dissolved in 1.0 L of water, would function as a buffer? 0.10 mol of sodium hydroxide (NaOH) and 0.10 mol of hydrochloric acid (HCl) 0.10 mol of ammonium chloride (NH4Cl) and 0.10 mol of ammonia (NH3) 0.10 mol of ammonium chloride (NH4Cl) and 0.10 mol of ammonium bromide (NH4Br) 0.10 mol of sodium chloride (NaCl) and 0.10 mol of ammonium chloride (NH4Cl) more than one of the above would be suitable buffers
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml...
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml of solution. The concentration of solution is: A) 0.82 M B) 0.16 M C) 0.08 M D) 4.1 M E) 8.2 M 2. You have 75.0 mL of a 2.50 M solution of Na,CrO(ag). You also have 125 mL of a 2.01 M solution of AgNOs(ag), Calculate the concentration of Cro. after the two solutions are mixed together. A) 0.00 M B) 0.309 M...
number 3
1 VOIULUI B) solvent C) ion (D) solute E) electrolyte 3) When the weak electrolyte HF is dissolved in water, the solution contains A) nothing B) all H+ and F-ions and no HF molecules C) only F-ions D) mostly HF molecules and a few H+ and F-ions E) all HF molecules 4) Calcium chloride reacts with sodium hydroxide to form solid calcium hydro balanced net ionic equation is_ A) CaCl2(aq) + 2NaOH(aq) - CaOH(s) + NaCl(aq). B) Ca+2(aq)...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a coffee- cup calorimeter (at constant pressure), the temperature rose from 25.0°C to 38.7°C. The dissolution process is: CaCiz(s) - Ca2+ (aq) + 2C1-(aq) The heat capacity of the solution and the calorimeter is 1258 J/°C. The molar mass of CaCl2 is 110.98 g/mol. 1) Determine the heat that was absorbed by the solution and calorimeter. (1 point) 2) Determine the heat that was released...
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
4. When the weak acid HN; (K4 = 1.9 x 10-) is dissolved in water, which species has the largest molar concentration? A OH B. H30+ C. HN3 D. N3
Question 40 5 pts Choose the compound from the set that can be classified as a salt. acetic acid (CH3CO2H) • magnesium bromide (MgBr2) sodium hydroxide (NaOH) glucose (C6H1206) Which of the following compounds when dissolved in water, would form an aqueous solution that would not conduct an electric current? CSF . HOCIO CH3COCH3 CuBr2
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml of solution. The concentration of solution is: A) 0.82 M B) 0.16 M C) 0.08 M D) 4.1 M E) 8.2 M 2. You have 75.0 mL of a 2.50 M solution of Na,CrO(ag). You also have 125 mL of a 2.01 M solution of AgNOs(ag), Calculate the concentration of Cro. after the two solutions are mixed together. A) 0.00 M B) 0.309 M...
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