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Physical Chemistry
The temperature for each solution is carried out at approximately 297 K where Kw=1.00×10−14.
Part A
0.70 g of hydrogen chloride (HCl) is dissolved in water to make 7.5 L of solution. What is the pH of the resulting hydrochloric acid solution?
Express the pH numerically to two decimal places.
Part A
0.70 g of hydrogen chloride (HCl) is dissolved in water to make 7.5 L of solution. What is the pH of the resulting hydrochloric acid solution?
Express the pH numerically to two decimal places.
Physical Chemistry
How many grams of KCl are in 225 g of an 8% (m/m) solution?
How many grams of NaHCO3 is in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin is in 65 mL of this solution?
How many grams of NaHCO3 is in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin is in 65 mL of this solution?
Physical Chemistry
How many grams of KCl are in 225 g of an 8% (m/m) solution?
How many grams of NaHCO3 are in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
Use the solubility rules to determine if each of the following salts are soluble or insoluble:
K3PO4
CaCO3
How many grams of NaHCO3 are in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
Use the solubility rules to determine if each of the following salts are soluble or insoluble:
K3PO4
CaCO3
Physical Chemistry
A 0.187 M weak acid solution has a pH of 3.99. Find Ka for the acid.
Express your answer using two significant figures.
Express your answer using two significant figures.
Physical Chemistry
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
Physical Chemistry
How many grams of KCl are in 225 g of an 8% (m/m) solution?
How many grams of NaHCO3 are in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
Use the solubility rules to determine if each of the following salts are soluble or insoluble:
K3PO4
CaCO3
How many grams of NaHCO3 are in 325 mL of 4.5 M solution of NaHCO3?
What is the molarity of a solution that contains 75 g of KNO3 in 350 mL of solution?
How many mL of a 0.3 M glucose (C6H12O6) intravenous solution is needed to deliver?
What volume (mL) of 0.2 M HCl solution can be prepared by diluting 50 mL of 1 M HCl?
How many grams of solute are needed to prepare 150 mL of a 40% (m/v) solution of LiNO3?
What is the mass % (m/m) of a solution prepared by dissolving 30.0 g of NaOH in 120.0 g of water?
What is the mass % (m/v) of a solution prepared by dissolving 5.0 g of KI to give a final volume of 250 mL?
A topical antibiotic solution is 1.0% (m/v) Clindamycin. How many grams of Clindamycin are in 65 mL of this solution?
Use the solubility rules to determine if each of the following salts are soluble or insoluble:
K3PO4
CaCO3
Physical Chemistry
The standard free energy of chemical reaction 2A + B ⇆ 2C at 500 K = 2 KJ mol-1. Calculate Kp at 500 K for the chemical reaction A + ½B ⇆ C.
Predict whether the following reaction is still spontaneous at 500C:
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Assume that the values of deltaHo and deltaS used in the first Problem are still valid at this temperature.
Use the value of deltaGo obtained in the first Problem to calculate the equilibrium constant for the following reaction at 25C:
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Predict whether the following reaction is still spontaneous at 500C:
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Assume that the values of deltaHo and deltaS used in the first Problem are still valid at this temperature.
Use the value of deltaGo obtained in the first Problem to calculate the equilibrium constant for the following reaction at 25C:
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Physical Chemistry
Calculate deltaH and deltaS for the following reaction and decide in which direction each of these factors will drive the reaction.
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Calculate deltaH and deltaS for the following reaction:
NH4NO3(s) + H2O(l) ---> NH4+ (aq) + NO3- (aq)
Use the results of this calculation to determine the value of deltaGo for this reaction at 25o C, and explain why NH4NO3 spontaneously dissolves is water at room temperature.
N2(g) + 3 H2(g) equilibr.gif (63 bytes) 2 NH3(g)
Calculate deltaH and deltaS for the following reaction:
NH4NO3(s) + H2O(l) ---> NH4+ (aq) + NO3- (aq)
Use the results of this calculation to determine the value of deltaGo for this reaction at 25o C, and explain why NH4NO3 spontaneously dissolves is water at room temperature.
Physical Chemistry
How many phases are presents if a container has a mixture of nitrogen, oxygen and helium?
Physical Chemistry
A 2m long pipelines tapers uniformly form 10cm diameter to 20cm diameters at its upper end. The pipe centreline slopes upwards at a angle of 30° to the horizontal and the flow direction is from smaller to bigger cross section. If the pressure gauges installed at lower and upper ends of the pipeline read 200kpa and 230kpa respectively. Determine the flow rate and the pressure mid length of the pipeline. Assume no energy losses.
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#239528 on Sep 2019
#239528 on Sep 2019