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QUESTION 17 8 points 55.0 mL of 0.750 M MgCl2 solution is mixed with 110 mL...
QUESTION 24 136 ml of 0.480 M HCl solution is mixed with 136 ml of 0.240...
QUESTION 24 136 ml of 0.480 M HCl solution is mixed with 136 ml of 0.240 M Ba(OH)2 solution in a coffee cup calorimeter of negligible heat capacity. The initial temperature of the two solutions are both at 20.00 degrees C. The the final temperature of the combined solution is 23.20 degrees C. cof H 20 - 4.184 J/g °C;d of solution is 1.00g/ml. Refer to the following: Ba(OH)2 + 2HCI --> BaCl2 + 2 H20 (answers are rounded to...
Question 5 5 pts A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed...
Question 5 5 pts A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction occurs: K2SO4(aq) + Pb(NO3)2 (aq) - 2 KNO3(aq) + PbSO4(s) The solid PbSO4 is collected, dried, and found to have a mass of 2.62 g. Determine the percent yield. 1 mole PbSO4 = 303.26g 91.1% 120% 69.5% 80.1% Question 29 5pi If 1.85 g MgO is combined with enough 1.00 M...
When 185 mL of 0.431 M HCl at 20.48 oC is mixed with 215 mL of...
When 185 mL of 0.431 M HCl at 20.48 oC is mixed with 215 mL of 0.431 M NaOH at 20.48 oC in a coffee cup calorimeter, the temperature of the mixture rises to 27.8 oC. What is the heat of reaction in KJ per mole of the acid? Assume the density and the specific heat of the solution are 1.02 g/ml and 4.017 J/g.oC respectively. The heat capacity of the calorimeter is 10.0 J/oC.
A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of...
A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HCl in a coffee cup calorimeter. If both solutions were initially at 35.0°C and the temperature of the resulting solution was recorded as 37.0°C, determine the experimental AHxt (in units of kJ/mol NaOH) for the neutralization reaction between aqueous NaOH and HCI. Assume that no heat is lost to the calorimeter or the surroundings, and that the density of the solution is...
A quantity of 2.00 × 102 mL of 0.715 M HCl is mixed with 2.00 ×...
A quantity of 2.00 × 102 mL of 0.715 M HCl is mixed with 2.00 × 102 mL of 0.358 M Ba(OH)2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.29°C. For the process H+(aq) + OH−(aq) → H2O(l) the heat of neutralization is −56.2 kJ/mol. What is the final temperature of the mixed solution?
A 71.0 mL sample of 1.0 M NaOH is mixed with 40.0 mL of 1.0 M...
A 71.0 mL sample of 1.0 M NaOH is mixed with 40.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 21.3°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is 1.0 g/mL, that the specific heat of the...
A 65.0 mL sample of 1.0 M NaOH is mixed with 48.0 mL of 1.0 M...
A 65.0 mL sample of 1.0 M NaOH is mixed with 48.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 24.4°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is 1.0 g/mL, that the specific heat of the...
A 108.2 mL sample of 1.00 M NaOH is mixed with 54.1 mL of 1.00 M...
A 108.2 mL sample of 1.00 M NaOH is mixed with 54.1 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 23.05 °C. After adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 30.50 °C. Assume that the density of the mixed solutions is 1.00...
A 105.2 mL sample of 1.00 M NaOH is mixed with 52.6 mL of 1.00 M...
A 105.2 mL sample of 1.00 M NaOH is mixed with 52.6 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 23.05 °C. After adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 30.70 °C. Assume that the density of the mixed solutions is 1.00...
A 104.2 mL sample of 1.00 M NaOH is mixed with 52.1 mL of 1.00 M...
A 104.2 mL sample of 1.00 M NaOH is mixed with 52.1 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 23.05 °C. After adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 32.30 °C. Assume that the density of the mixed solutions is 1.00...
QUESTION 24 136 ml of 0.480 M HCl solution is mixed with 136 ml of 0.240 M Ba(OH)2 solution in a coffee cup calorimeter of negligible heat capacity. The initial temperature of the two solutions are both at 20.00 degrees C. The the final temperature of the combined solution is 23.20 degrees C. cof H 20 - 4.184 J/g °C;d of solution is 1.00g/ml. Refer to the following: Ba(OH)2 + 2HCI --> BaCl2 + 2 H20 (answers are rounded to...
Question 5 5 pts A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction occurs: K2SO4(aq) + Pb(NO3)2 (aq) - 2 KNO3(aq) + PbSO4(s) The solid PbSO4 is collected, dried, and found to have a mass of 2.62 g. Determine the percent yield. 1 mole PbSO4 = 303.26g 91.1% 120% 69.5% 80.1% Question 29 5pi If 1.85 g MgO is combined with enough 1.00 M...
A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HCl in a coffee cup calorimeter. If both solutions were initially at 35.0°C and the temperature of the resulting solution was recorded as 37.0°C, determine the experimental AHxt (in units of kJ/mol NaOH) for the neutralization reaction between aqueous NaOH and HCI. Assume that no heat is lost to the calorimeter or the surroundings, and that the density of the solution is...
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