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12. (5 pts) Consider a...
3. (5 pts) A solution was prepared by transferring 0.661 g of KSO to a 250.0-ml...
3. (5 pts) A solution was prepared by transferring 0.661 g of KSO to a 250.0-ml volumetric flask (container 1) and adding water to the mark. A sample of this solution of volume 1.000 ml was transferred to a 500.0-ml volumetric flask (container 2) and diluted to the mark with water. Then 10.0 mL of the diluted solution was transferred to a 250.0-ml flask (container 3) and diluted to the mark with water. What is the final concentration of K2SO4...
2.A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE
2.A dilution is a solution made by adding a solvent to a
supersaturated solution.
TRUE
FALSE
3.A supersaturated solution may be prepared by slowly cooling down
a solution saturated at an elevated temperature.
TRUE
FALSE
4.The solubility of a gaseous solute in water is increased by an
increase in pressure.
TRUE
FALSE
1. In order to prepare solution of a precise concentration, the common approach is as follows. Sample of solid with it's mass determined on an analytical balance, is...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
5. (36 pts total) To determine the molar solubility and solubility product constant of magnesium carbonate,...
5. (36 pts total) To determine the molar solubility and solubility product constant of magnesium carbonate, Matt stirred 5 g of MgCO3 powder in 150 mL of 0.0041 M MgCl2 solution for 15 minutes. After waiting an additional 10 minutes, he separated the undissolved solid by filtration and collected the filtrate in a dry Erlenmeyer flask. He determined the concentration of CO2 in the filtrate to be 1.40 x 10M Answer the following questions based on Matt's experimental data. For...
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass...
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass = 46.08 g/mol) in 42.2 g water. What is the molality (mol/kg) of C2H5OH in the solution? 4361 m 4.36 m 0.767 m 18.2 m 0.0182 m Question 2 5 pts Which observation correctly reflects colligative property? A KOH solution has a high vapor pressure than pure water Adding NaCl to ice will increase its melting point. A 0.5 m NaOH solution boils at...
Is the calculated concentration for IO3- in the data table correct, and if not, how do I calculat...
Is the calculated concentration for IO3-
in the data table correct, and if not, how do I calculate it. Also,
the questions below the data table in the second picture. How are
they calculated?
2. The molar solubility of Cal(IO3)2 in pure water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated:O -24 °C ted:1 Q mL (or g) Data Trial 1 Trial 2 Trial 3 Volume of Na2S203 titrant Final buret...
Please answer 11-16 10. How many sugar molecules are present in 300 mL of a 2.0...
Please answer 11-16
10. How many sugar molecules are present in 300 mL of a 2.0 M solution? (The formula for sugar is C12H220)Sugar conce mbakxvolme 2.0 x .300 6.6 mol 11. Your teacher asks you to prepare 500 mL of a 2.75 molar solution of Nacioran upcoming laboratory experiment. Write a step-by-step procedure describing how you would carry out this task. 12. When water is added to a solution, the solution will be more diluted. What is the equation...
how do you get these answers? please show work 13, (5 pts) How many different peaks...
how do you get these answers? please show work
13, (5 pts) How many different peaks should be present in the "C NMR spectrum of the following molecule? c. 6 d. 7 None of the above 14, (5 pts) Given that the reactivity for monochlorination of an alkane is 5.0:3.5:1.0 (3201), what will be the percent of each product A, B? Ch H3C-CH-CH-CH3 H2C + Ha CH3 CH3 CH 55% 45% c, d. e. 86%, 14% 17%,83% None of the...
5. Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) →...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
13. (12 pts-4 pts each) Show how you could carry out th how you could carry...
13. (12 pts-4 pts each) Show how you could carry out th how you could carry out the following synthesis reactions by placing the letters corresponding to the appropriate reagents above each ar must be in the correct order to receive full credit. priate reagents above each arrow. The reagents A. HBr, ether B. Br2, CH2Cl2 C. Br2, H2O D. 1. Hg(OAC)2, H2O/THF 2. NaBH4 E. 1. BH3, THF 2. H2O2, OH F. H2SO4, H2O/HgSO4 G. NBS, hy H. H/Pd/C...
3. (5 pts) A solution was prepared by transferring 0.661 g of KSO to a 250.0-ml volumetric flask (container 1) and adding water to the mark. A sample of this solution of volume 1.000 ml was transferred to a 500.0-ml volumetric flask (container 2) and diluted to the mark with water. Then 10.0 mL of the diluted solution was transferred to a 250.0-ml flask (container 3) and diluted to the mark with water. What is the final concentration of K2SO4...
2.A dilution is a solution made by adding a solvent to a
supersaturated solution.
TRUE
FALSE
3.A supersaturated solution may be prepared by slowly cooling down
a solution saturated at an elevated temperature.
TRUE
FALSE
4.The solubility of a gaseous solute in water is increased by an
increase in pressure.
TRUE
FALSE
1. In order to prepare solution of a precise concentration, the common approach is as follows. Sample of solid with it's mass determined on an analytical balance, is...
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
5. (36 pts total) To determine the molar solubility and solubility product constant of magnesium carbonate, Matt stirred 5 g of MgCO3 powder in 150 mL of 0.0041 M MgCl2 solution for 15 minutes. After waiting an additional 10 minutes, he separated the undissolved solid by filtration and collected the filtrate in a dry Erlenmeyer flask. He determined the concentration of CO2 in the filtrate to be 1.40 x 10M Answer the following questions based on Matt's experimental data. For...
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass = 46.08 g/mol) in 42.2 g water. What is the molality (mol/kg) of C2H5OH in the solution? 4361 m 4.36 m 0.767 m 18.2 m 0.0182 m Question 2 5 pts Which observation correctly reflects colligative property? A KOH solution has a high vapor pressure than pure water Adding NaCl to ice will increase its melting point. A 0.5 m NaOH solution boils at...
Is the calculated concentration for IO3-
in the data table correct, and if not, how do I calculate it. Also,
the questions below the data table in the second picture. How are
they calculated?
2. The molar solubility of Cal(IO3)2 in pure water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated:O -24 °C ted:1 Q mL (or g) Data Trial 1 Trial 2 Trial 3 Volume of Na2S203 titrant Final buret...
Please answer 11-16
10. How many sugar molecules are present in 300 mL of a 2.0 M solution? (The formula for sugar is C12H220)Sugar conce mbakxvolme 2.0 x .300 6.6 mol 11. Your teacher asks you to prepare 500 mL of a 2.75 molar solution of Nacioran upcoming laboratory experiment. Write a step-by-step procedure describing how you would carry out this task. 12. When water is added to a solution, the solution will be more diluted. What is the equation...
how do you get these answers? please show work
13, (5 pts) How many different peaks should be present in the "C NMR spectrum of the following molecule? c. 6 d. 7 None of the above 14, (5 pts) Given that the reactivity for monochlorination of an alkane is 5.0:3.5:1.0 (3201), what will be the percent of each product A, B? Ch H3C-CH-CH-CH3 H2C + Ha CH3 CH3 CH 55% 45% c, d. e. 86%, 14% 17%,83% None of the...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
13. (12 pts-4 pts each) Show how you could carry out th how you could carry out the following synthesis reactions by placing the letters corresponding to the appropriate reagents above each ar must be in the correct order to receive full credit. priate reagents above each arrow. The reagents A. HBr, ether B. Br2, CH2Cl2 C. Br2, H2O D. 1. Hg(OAC)2, H2O/THF 2. NaBH4 E. 1. BH3, THF 2. H2O2, OH F. H2SO4, H2O/HgSO4 G. NBS, hy H. H/Pd/C...
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