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A 95.0 gram piece of copper wire is heated to 89.2?C and thenplaced in a calorimeter containing water at 20.4?C. The finaltemperature of the water and copper wire is 23.0?C. The heat capacity of the calorimeter is 32.0 J/K. Calculate the mass of water in the calorimeter.
15.0 moles of gas are in a 8.00 L tank at 21.0C. Calculate the difference in pressure between methane and an ideal gas under these conditions
The solubility of barium sulfate varies with the composition of the solvent in which it was dissolved. In which solvent mixture would BaSO4 have the lowest solubility
What is the pH of a sodium acetate solution prepared by adding 0.820 grams of sodium acetate to 100.0 ml of water at 25.0 oC? The Ka at 25.0 oC for acetic acid is 1.8 × 10-5.
What is the molarity of ZnCl2 that forms when 30.0 of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL . Zn+ CuCl2=ZnCl2+Cu.
In a sample containing small grains of sand, what would you observe in the Mel-Temp apparatus when you melt the sample that would indicate to you that your sample contained this type of impurity
When 2.65g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C. Calculate Ka for the unknown weak acid.
what is the maximum amount of o2 in grams that can be obtained from 2.00 x 102 g of nitroglycerin? b what is the yield
how many grams of vinegar are required to react completely with 25.0g of baking soda.
System conducts 1.30x10^2 cal heat to srroundings while delivering 316 cal work. What is the change in internal energy of the system (in Cal).
calculate porphyrin molecule lowest energy absorption if length of molecule is 1000 pm as approximated by porphyrin
100g of water specific heat4.184 jgc and 100g of a metal sample specific heat0.397 jgc are heated from 25 degrees
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
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