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Calculate the osmotic pressure of a solution containing 25.9g of glycerin (C3H8O3) in 243.5mL of solution at 310K.
a weather ballon filled with helium has a volume of 1.0*10^-4L at 1.00 atm and 30.0C. it ascends to an altitude at which the pressure is only 0.60 atm and the temperature is -20.0C. what is the volume of the ballon at the higher altituda.
At 131 celsius and 769 mmHg, 2.00 L of the gaseous compound weighs 4.44 g. What is the molecular formula for the compound?
Using a Sample of 0.3991 grams of an unknown monoprotic acid, HA, which combines with Sodium hydroxide according to the balanced equation HA + NaOH ® NaA + H2O when 35.30 mL of 0.1086 M Sodium hydroxide is required to titrate the acid to the equiv..
The following system is at equilibrium with [N2O4]= .55M and [NO2]=.25M. If an additional .10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4
prepare 250.00 mL of 0.150 M ammonium ion solution beginning with solid ammonium phosphate, (NH4)3 PO4.
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
What is the molar mass of X if 0.85g of X depresses the freezing point of 100g of benzene by 0.47Cdegrees?
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
The Common Ion Effect. What is the pH of a solution that contains 0.250-M benzoic acid and 0.600-M sodium benzoate?
heat capacity of the calorimeter which is 10.17kJ/Degree Celsius and the temperature rose 105 Degrees Celsius. How many FOOD CALORIES does this cookie contain?
1 liter of sodium carbonate 0.4 M is added to 1 liter HCl 0.3 M what is the excess material and how many moles remains?
what is the molar mass of the acid? If the standardization of the NaOH solution, why is it important to rinse the wet pipet with small portions of the standard oxalic acid solution
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