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1.553 grams of chymotrypsinogen are placed into 100.0mL of water at 298K. Define when this solution was separated from pure water by a semi permeable membrane, the resulting osmotic pressure supported a column of water 157mm in height. Explain what is the molecular mass of chymotrypsinogen?
Two hydrogen atoms interact to form a hydrogen molecule. Classify the following statements that describe the stages of bond formation in a hydrogen molecule according to the predominant force existing between the two hydrogen atoms.
The equilibrium constant for the reaction, 2HI = H2 + I2 is 0.49. Calculate the number of moles of hydrogen produced when one mole of HI
A solution is prepared by dissolving 1.50 g of compound in 25.0 mL H20 at 25 degrees Celsius. The boiling point of the solution is 100.45 degrees Celsius.
A sample of an ideal gas at 0.93atm and 25oC occupied a volume of 17.3L. This gas was transferred to a 3.7L container without a temperature change. What was the pressure of the gas under the new conditions
a chloroform solution of caffeine c8h10n4o2 contains concentration of 0.0868 m . compute mole fraction of
what is minimum grams of acetic acid and of sodium acetate dehydrate that must be used to prepare a buffer with a
An interstitial alloy prepared from two metals. metal A with the larger atomic radius has a hexagonal closed-packed structure. What if the formula(for example:A2B,AB,AB2)of the alloy if atoms of metal B occupy the following?
Consider the reversible reaction: 2NO2(g) N2O4(g). If the concentrations of both NO2 and N2O4 are 0.016 mol L-1, what is the value of Qc
A chemist prepares a solution of potassium permanganate by measuring out 33.g of potassium permanganate into a 450ml volumetric flask and filling the flask to the mark with water. Calculate the molarity
A student dehydrated 10.0 g of 2-methyl-2-butanol with %50 sulfuric acid and obtained 6.50 g of products. Calculate the theoretical yield and the percent yield.
a 0.10 m solution of lactic acid a weak monoprotic acid of fromulahc3h5o3 was found to have a ph of2.43. what is the
A 100g iron ball (specific heat= 0.473 J/g degrees celcius) is heated to 125 degrees celcius and placed in a calorimeter holding 200g of water at 25.0 degrees celcius. What will be the highest temperature reached by the water?
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