You mix pinch of salt in water and stir until it's completely dissolved. In this system,...
You mix pinch of salt in water and stir until it's completely dissolved. In this system, the water is the ________, the salt is the ________, and the end result is a ________.
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solute; solution; solvent |
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solvent; solute; solution |
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solvent; solution; solute |
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solute; solvent; solution |
Homework Answers
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You mix pinch of salt in water and stir until it's completely
dissolved. In this system,...
1. Solubility in WATER Check solubility of four solutes in water (H2O). For each solute record...
1. Solubility in WATER Check solubility of four solutes in water (H2O). For each solute record how many teaspoons dissolved in 1/2 cup of water. NaCl: Start out with 4 small glasses (cups) and add 1/2 cup of water to each. Put 1/2 level teaspoon (tsp) of salt (NaCl) into the first cup and stir. If it dissolves within 1 minute; add another 1/2 tsp of salt and stir. Count the number of 1/2 tsps you are adding. Repeat until...
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation...
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation Chip didn't dissolve some solid on Bottom Solid completely dissolved Chip floated on top of water Floated on top of water Sugar Wax Cooking oil of these solute? 1. What patterns do you observe regarding the polar and non-polar characteristics of these se 2. What effect do you think heating would have on the solubilities of these substances? B. Non-Polar Solvent: Toluene Solute lodine...
you add an excess of ca(oh)2 to water maintained at particular temperature, stir until the solution...
you add an excess of ca(oh)2 to water maintained at particular temperature, stir until the solution is saturated, filter, then determine the OH in the solution by titration with acid. titration of 10.0 ml of the calcium hydroxide solution to the end point requires 4.86 ml of 0.070 M HCl solution. what is the molar quantity of OH- in the 10.0 ml of solution? what are the concentrations of Ca2+ and OH- ? WHAT IS THE SOLUBILITY OF Ca(OH)2 under...
Silver cobonate Ag2CO3 is a salt of low solubility, when placed in water it dissolved until...
Silver cobonate Ag2CO3 is a salt of low solubility, when placed in water it dissolved until equilibrium is reached Ag2CO3(s)----> 2Ag+(aq) + CO32-(aq) Write a solubility product constatnt Ksp of silver carbonate.
b. MgCl, is dissolved in distilled water at 25°C until the saturated solution is obtained (system...
b. MgCl, is dissolved in distilled water at 25°C until the saturated solution is obtained (system reaches equilibrium). The concentration of Mg2 in the saturated solution is 1.35 x 10-'M. The dissolution of MgCl, in distilled water is endothermic. Write the balanced chemical equation to obtain the saturated solution Calculate the solubility product, K of MgCl2. Explain the effect of increasing the temperature on the amount of MgCl, Justify your answer. C. When solid Pbl, is added to pure water...
please answer all questions (14) If you mix two solutions and the temperature of the mixture...
please answer all questions
(14) If you mix two solutions and the temperature of the mixture decrease, which is true in such case? (a) The reaction is endgyermic, AH >O (b) The reaction is exothermic, AH< 0 O(C) The reaction is endothermic, AH< 0 (d) The reaction is exothermic, AH>0 (12) One liter of Nigas and one liter of O2 gas will have the same at 25°C and 1 atm. (a) molarity (b) density (c) molar mass (d) mass (20)...
8 4 points When a 0.456 g sample of salt is dissolved into water in a...
8 4 points When a 0.456 g sample of salt is dissolved into water in a completely insulated calorimeter (a simple styrofoam coffee cupl. the temperature of the 500 ml water decreases by 0.940°C. What is the heat for the system (the salt dissolving)? O 1.79kJ 0 +1.80 kJ O +214) O 0.214 - 1.96 kJ +1.97 Ooo
U The compound solute) wils nol dissolved cop y When Soluto was not completely dissolved mass...
U The compound solute) wils nol dissolved cop y When Soluto was not completely dissolved mass Of SOUTC novic be tricen i ess but we are using mass of solute as higirur Vore so the calculated moacviar mass would be more than the true valve Of Molecular MASS. c) A foreign solute was already present in the solvent When a farcign Joure is preprost Arcady presento mass of Solute Should be thon more than Wb, with the uſe of w...
2. When 40.7 g of the "salt" HgCl is dissolved in 100 g water, the freezing...
2. When 40.7 g of the "salt" HgCl is dissolved in 100 g water, the freezing point depression is observed to be 2.83 K. Based on this, does one expect the solution to readily conduct electricity? 3. What are the solvent and solute activities and activity coefficients for a component having 25% mole fraction and obeying the vapor pressure equation P, = 78.8x, (0.65x4+0.18x)? (Hint: think about Raoult's and Henry's Laws) 4. The Debye-Huckel limiting law is strictly valid only...
2.95g of sodium bicarb how much water to add to make 1.0 M solution 4.25g of...
2.95g of sodium bicarb how much water to add to make 1.0 M solution 4.25g of Sodium carbonate how much water to add to make 1.0 M solution. Please show all the work very clearly even little steps to help me understand. "You need to create a 1.0 M solution of sodium bicarbonate (NaHCO3 – baking soda). Your lab kit has a bag of sodium bicarbonate to use for this portion of the experiment. Write “sodium bicarbonate” on a sample...
2. "Like Dissolves Like: Polarity and Solubility A. Polar Solvent: Water Salute Iodine Sodium chloride Obseruation Chip didn't dissolve some solid on Bottom Solid completely dissolved Chip floated on top of water Floated on top of water Sugar Wax Cooking oil of these solute? 1. What patterns do you observe regarding the polar and non-polar characteristics of these se 2. What effect do you think heating would have on the solubilities of these substances? B. Non-Polar Solvent: Toluene Solute lodine...
b. MgCl, is dissolved in distilled water at 25°C until the saturated solution is obtained (system reaches equilibrium). The concentration of Mg2 in the saturated solution is 1.35 x 10-'M. The dissolution of MgCl, in distilled water is endothermic. Write the balanced chemical equation to obtain the saturated solution Calculate the solubility product, K of MgCl2. Explain the effect of increasing the temperature on the amount of MgCl, Justify your answer. C. When solid Pbl, is added to pure water...
please answer all questions
(14) If you mix two solutions and the temperature of the mixture decrease, which is true in such case? (a) The reaction is endgyermic, AH >O (b) The reaction is exothermic, AH< 0 O(C) The reaction is endothermic, AH< 0 (d) The reaction is exothermic, AH>0 (12) One liter of Nigas and one liter of O2 gas will have the same at 25°C and 1 atm. (a) molarity (b) density (c) molar mass (d) mass (20)...
8 4 points When a 0.456 g sample of salt is dissolved into water in a completely insulated calorimeter (a simple styrofoam coffee cupl. the temperature of the 500 ml water decreases by 0.940°C. What is the heat for the system (the salt dissolving)? O 1.79kJ 0 +1.80 kJ O +214) O 0.214 - 1.96 kJ +1.97 Ooo
U The compound solute) wils nol dissolved cop y When Soluto was not completely dissolved mass Of SOUTC novic be tricen i ess but we are using mass of solute as higirur Vore so the calculated moacviar mass would be more than the true valve Of Molecular MASS. c) A foreign solute was already present in the solvent When a farcign Joure is preprost Arcady presento mass of Solute Should be thon more than Wb, with the uſe of w...
2. When 40.7 g of the "salt" HgCl is dissolved in 100 g water, the freezing point depression is observed to be 2.83 K. Based on this, does one expect the solution to readily conduct electricity? 3. What are the solvent and solute activities and activity coefficients for a component having 25% mole fraction and obeying the vapor pressure equation P, = 78.8x, (0.65x4+0.18x)? (Hint: think about Raoult's and Henry's Laws) 4. The Debye-Huckel limiting law is strictly valid only...
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