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A student prepares a solution by dissolving 42.0 g of substance A in 0.600 kg of CHCl33fo. Substance A does not form ions in solution (remains intact) and has a molecular mass of 154g/mol. What is the freezing point depression of the solution (T) if CHCl has a k = 4.68 C/m? Show the calculation.
Calculate the volume of all gases evolved by the complete oxidation of 0.380 of the amino acid alanine if the products are liquid water, nitrogen gas, and carbon dioxide gas; the total pressure is 1.02 ; and = 295.
A reaction was found to be second order in carbon monoxide concentration. The rate of the reaction _____ if the [CO] is doubled, with everything else kept the same.
A piece of silver is dropped in a container of water, write net ionic equation
A small amount of the radioactive isotope Pb-212 was mixed with a small quantity of a non-radioactive lead salt containing 0.0100 g lead (Ar = 207).
Compute the molar mass of beta carotene if 10.0ml of a solution containing 7.68mg of beta carotene has an osmotic pressure of 26.57mmHg at 25.0C.
Control of a paint sprayer in a booth through which items pass on an overhead conveyor so that the paint is switched on when a part is in front of the paint.
If the final temperature of the combined water is 40.4 degrees Celsius and the heat capacity of the calorimeter is 26.3 joules per degree Celsius what is the mass of the water originally in the calorimeter
5-dihydropentalene reacts with two equivalents of butyllithium to form dianion of (C8H6)2-. intend a structure for this dianion and suggest why it form so readily
What is the pH at the equivalence point of a weak base-strong acid titration if 20.00 mL of NaOCl requires 28.30 mL of 0.50 M HCl? Ka=3.0x10-8 for HOCl.
at 46degc a sample of ammonia gas exerts a pressure of 5.3 atm. what is the pressure when the volume of the gas is
Teeth are made principally from the mineral hydroxyapatite, Ca5 (PO4)3OH, which can be dissolved in acidic solution such as that produced by bacteria in the mouth:
a student heated a beaker containing a liquid over a yellow flame. after the beaker was removed the student noticed a
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