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When a 2.00 g sample of RbBr is dissolved in a calorimeter that has a total heat capacity 0.6306 kJ*K^-1, the temperature decreases by 0.420 K. Calculate the molar heat of solution of RbBr.
What size sample containing 12.0% chlorine (Cl) should be taken for analysis if the chemist wishes to obtain a precipitate of AgCl which weigh
The temperature of 55.6 g of a material decreases by 14.8C when it loses 3080 J of heat. What is its specific heat?
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide.
what is the required time at 675 degrees celsious to have only 25% Austenite left during the transformation from Austenite to Pearlite?
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20^oC, will the solution begin to freeze
You are required to prepare a review-type essay on Electrochemistry. Insert your completed review essay into a soft-bound cover with a clear plastic front.
how many grams of carbon are required to react with 1.5x10^25 atoms of hydrogen to form CH4
Calculate the cost in free energy to move 1mol K+ through the cell wall by active transport. Assume no change in K+ concentrations during this process.
how much heat is transferred when 400 grams of mercury (Hg) is vaporized? specific heat (c) = 0.14J/g C, heat of fusion = 2.29 kJ/mol, heat of vaporization = 59.1 kJ/mol.
The freezing temperature of ethanol is -114.0 oC, the density is 0.789 g/cm3, and Kf is 1.99oC/m. Calculate the new freezing point when 0.100 L of methanol
a 4.22 g sample of cus was added to excess hcl and the resulting h2s was collected over water. what volume of h2s was
if I weigh KHP to use in an experiment (to titrate with NaOH ) on a triple beam balance opposed to analytical scale to eventually find molar mass of unknown NH4 salt, what effect, if any, would this have on the accuracy of final results
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