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PLEASE HELP DUE IN 15 MINS
A 10 g of water was found to contain 10...
Hint: Change in temperature, AT = KX molality X Van't Hoff factor CA 1 M CscI...
Hint: Change in temperature, AT = KX molality X Van't Hoff factor CA 1 M CscI OB 2 M CaCl2 OC. 1 M TI(NO3)3 OD 2 M Naci OE 2 M Sn(NO3)4 QUESTION 34 Which statement best describes the colligative properties of a solvent OA Depend on the nature of the solute OB Independent of the solute concentration c. Independent on the nature of the solute OD. Depend on the solute concentration OE. Both C and D QUESTION 35 Lowering...
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water....
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
3. Please help is due in 30 mins, will rate, Thank you! An aqueous solution has...
3. Please help is due in 30 mins,
will rate, Thank you!
An aqueous solution has a molality of (2.610x10^-1) m. The density of the solution is (1.4100x10^0) g/mL and the solute has a molar mass of (1.68x10^2) g/mol. What is the mole fraction of solute of this solution?
10. Please help is due in 30 mins, will rate, Thank you! How many grams of...
10. Please help is due in 30 mins,
will rate, Thank you!
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.60x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kf = 1.86°C/m.
Due in 27 mins please help. This is the second time posting, got the wrong answer...
Due in 27 mins please help. This is the second time posting, got
the wrong answer last time. Last attempt left.
The constant volume calorimeter is used to measure the heat of combustion of a reaction Constant volume calorimeter is filled with A known amount of water B. Unknown amount of water Oc. Known amount of ethanol D.Unknown amount of ethanol O E. None of above The AHxn for the following reaction is Question 7.png AH2 = Enthalpy of formation...
Density of water = 998 kg/m^3 Molecular weight of CaCO3 = 100 g/mole please help to...
Density of water = 998 kg/m^3
Molecular weight of CaCO3 = 100 g/mole
please help to solve this problem
Determine the concentration, molarity, normality, and mole fraction of a 2-L solution containing 50 g calcium carbonate (CaCO3). Assume that the density of water is based on a temperature of 20°C/68°F.
1. Calculate the molarity of the following solutions: a. 318 g Mg Br, in 859 ml...
1. Calculate the molarity of the following solutions: a. 318 g Mg Br, in 859 ml solution b. 8.28 g Ca(C,H,O,), in 414 ml solution c. 31,1 g Al,(80.), in 766 ml solution d. 59.8 g CaCl, in 100 ml solution e. 313.5 g LICIO, in 250 ml solution | 849 Calculate the moles of solute needed to prepare each of the following: 2. LOL of a 3.0 M NaCl solution b. 0.40 L of a 1.0 M KBr solution...
help with number 7 please! 3. Heat gained by solution (temp. increase x 100 g x...
help with number 7 please!
3. Heat gained by solution (temp. increase x 100 g x 4.184 J/K-9) = 6.5°C x 100g *4.181/ 2,719. 6 5 4. Heat gained by calorimeter (temp. increase X heat capacity of calorimeter) = (0.5°C x 74.30J/o 482.95, – 3,202.55, 5. Total joules released by reaction (3) + (4)] = 6. Complete: CH3COOH + NaOH CH3C06 Na+H2O 7. The number of moles of H,0 produced in reaction of 50 mL 1.0 M CH3COOH and 50...
I need it right now, please help me?? PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
A. This addition polymer features aromatic rings and is commonly found in moisture-barrier wraps used in...
A. This addition polymer features aromatic rings and is commonly found in moisture-barrier wraps used in home construction B. This condensation polymer is the product of a difunctional acid with aromatic character and the type of glycol one would find in antifreeze solutions and is used to make countless beverage containers annually. C. This addition polymer is completely halogenated and is associated with non-stick working surfaces in the kitchen and in industry. D. This condensation polymer is the product of...
Hint: Change in temperature, AT = KX molality X Van't Hoff factor CA 1 M CscI OB 2 M CaCl2 OC. 1 M TI(NO3)3 OD 2 M Naci OE 2 M Sn(NO3)4 QUESTION 34 Which statement best describes the colligative properties of a solvent OA Depend on the nature of the solute OB Independent of the solute concentration c. Independent on the nature of the solute OD. Depend on the solute concentration OE. Both C and D QUESTION 35 Lowering...
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
3. Please help is due in 30 mins,
will rate, Thank you!
An aqueous solution has a molality of (2.610x10^-1) m. The density of the solution is (1.4100x10^0) g/mL and the solute has a molar mass of (1.68x10^2) g/mol. What is the mole fraction of solute of this solution?
10. Please help is due in 30 mins,
will rate, Thank you!
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.60x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kf = 1.86°C/m.
Due in 27 mins please help. This is the second time posting, got
the wrong answer last time. Last attempt left.
The constant volume calorimeter is used to measure the heat of combustion of a reaction Constant volume calorimeter is filled with A known amount of water B. Unknown amount of water Oc. Known amount of ethanol D.Unknown amount of ethanol O E. None of above The AHxn for the following reaction is Question 7.png AH2 = Enthalpy of formation...
Density of water = 998 kg/m^3
Molecular weight of CaCO3 = 100 g/mole
please help to solve this problem
Determine the concentration, molarity, normality, and mole fraction of a 2-L solution containing 50 g calcium carbonate (CaCO3). Assume that the density of water is based on a temperature of 20°C/68°F.
1. Calculate the molarity of the following solutions: a. 318 g Mg Br, in 859 ml solution b. 8.28 g Ca(C,H,O,), in 414 ml solution c. 31,1 g Al,(80.), in 766 ml solution d. 59.8 g CaCl, in 100 ml solution e. 313.5 g LICIO, in 250 ml solution | 849 Calculate the moles of solute needed to prepare each of the following: 2. LOL of a 3.0 M NaCl solution b. 0.40 L of a 1.0 M KBr solution...
help with number 7 please!
3. Heat gained by solution (temp. increase x 100 g x 4.184 J/K-9) = 6.5°C x 100g *4.181/ 2,719. 6 5 4. Heat gained by calorimeter (temp. increase X heat capacity of calorimeter) = (0.5°C x 74.30J/o 482.95, – 3,202.55, 5. Total joules released by reaction (3) + (4)] = 6. Complete: CH3COOH + NaOH CH3C06 Na+H2O 7. The number of moles of H,0 produced in reaction of 50 mL 1.0 M CH3COOH and 50...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
A. This addition polymer features aromatic rings and is commonly found in moisture-barrier wraps used in home construction B. This condensation polymer is the product of a difunctional acid with aromatic character and the type of glycol one would find in antifreeze solutions and is used to make countless beverage containers annually. C. This addition polymer is completely halogenated and is associated with non-stick working surfaces in the kitchen and in industry. D. This condensation polymer is the product of...
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