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Several interesting observations from the world around you are listed below. Which of these is NOT explained by a colligative property?
A sample of carbon dioxide occupies at 2.54dm3 container at STP. What is the volume of the gas at a pressure of 4HCL +O2 ---> 2CL + 2H20
In a purity check for industrial diamonds, a 10.00 carat (1 carat = 0.2000 g) diamond is heated to 74.21°C and immersed in 26.05 g of water in a constant-pressure calorimeter. The initial temper
Calculate the quantity in grams of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of .75 M and a sodium formate concentration of .75 M.
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00 kg of water that is at the EPA limit for lead.
A 1.20 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 735mmHg . The dry ice is allowed to sublime (convert from solid to gas) and t
The flask was then shaken until the solution was uniform. A 35.0-mL sample of this glucose solution was diluted to 0.500 . How many grams of glucose are in 100L. of the final solution?
The entropy of sublimation of a certain compound is 7.2 J / K mol at its normal sublimation point of 76 C. Calculate the vapour pressure in torr of the compound at 28 C. Assume that the enthalpy of
A 100.0 ml aliquot of .2oo M aqueous potassium hydroxide is mixed with 100.0 ml of .200 M aqueous magnesium nitrate. what mass of precipitate is formed?
Calculate the molecular mass of the nonionic solutes. 64.3 grams of solute in 3.90 X 10Ë grams of water raises the boiling point to 100.680 C.
A compound of a transition metal and iodine is 65.1% metal by mass. How many grams of iodine is present in 859 g of this compound?
20cm3 of a saturated hydrocarbon required 160cm3 of oxygen for complete combustion 100cm3 of carbon dioxide and 120cm3 of water vapour were produced all measurements being made at the same temperatu
80 g of potassium nitrate are dissolved inn 100 ml of water at 60 degrees celsius. at what temperature will potassium nitrate begin to crystallize as the solution cools?
How many seconds are required to produce 4.94 mg of chromium metal from an acidic solution of potassium dichromate, using a current of 0.234 A?
3 solutions are mixed together to form a single solution. One contains 0.2 moles of Pb(C2H3O2)2, the second one contains 0.1 moles of Na2S, and the third contains 0.1 moles of CaCl2.
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
A total of 2.00 mole of a compound is allowed to react in a foam coffee cup that contains 162g of water. The reaction caused the temperature of the water to rise from 21.0 C to 24.7 C. What is the e
First determine which is the limiting reagent, then calculate the heat produced by the reaction (q), and molar heat of the reaction (H) using the above equations.
If 25.0 mL of 0.200 M NaF solution are mixed with 10.0 mL of 0.150 M Pb(NO3)2 solution, how many grams of the precipitate would be formed?
A 1.00 L balloon filled with nitrogen at 25 ° C and 765.3 torr is moved to a closed vessel with the pressure now at 659.3 torr and temperature 25 ° C. Calculate the balloon's volume
If a bottle of nail polish remover contains 171 of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 .
Which form would give faster relief for your heartburn, considering that each contained the same ingredients and were taken in equal amounts? Why?
Outline of the mechanism of the dehydration of 4-methylcyclohexanol catalyzed by phosphoric acid please.
A solution is prepared by dissolving 55.1 g of KCl in approximately 75 mL of water and then adding water to a final volume of 125 mL. What is the molarity of KCl(aq) in this solution?