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When a 110 gram peice of metal at 80 degrees celcius is placed in 220 grams of water at 0 degrss celcicius the metal is cooled and the water is warmed and both come to a final temprature of 20 degrees celcius. What is the specific heat of the metal?
How much energy is required to vaporize 158g of butane (C4H10) at its boiling point, if it has Hvap is 24.3kJ/mil
How many grams of FeSO4*(NH4)2SO4*6H2O (MW 392.14) must be dissolved and diluted to 250.0 mL to prepare an (aq) solution of density 1.00g/mL that is 1.00 ppm Fe2+ by wt
A sample conaining both HCl and HNO3 had a density of 1.083g/ml. A 30.00 ml amount of this sample required 25.78 ml of 0.3248 M NaOH for titration. Another 30.00 ml amount of this sample required 24.47 ml of 0.1327 M AgNO3 for titration
if you started a ride with ice packs that held 1300 g of frozen water at 0 rmcircc and the temperature of the water at
if the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base and the ph
What is the final temperature in a squeezed cold pack that contains 50.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 for the solution, an initial temperature of 27.0 C, and no heat transfer between the cold pack and the..
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual ch..
Balance the chemical equation when aqueous ammonium phosphate and aqueous calcium choloride are mixed. What is the sum of the coefficeints?
What happens to it after bromination of Cholesterol takes place? (ie- why is it that bromination allows you to separate it from cholesterol?) 3) Give a stepwise mechanism for the debromination step
How many grams of H2O can be cooled from 45 degrees C to 15 degrees C by the evaporation of 63 grams of water.
A voltaic cell consist of gold in a gold(III)nitrate solution and copper in a copper(II)nitrate electrode. Calculate cell potential if the [Au3+] is 0.00750M and [Cu2+]=1.50M at 25 degrees celsius.
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