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Question: A 230.0 g piece of lead is heated to 80.0 deg C and then dropped into a calorimeter containing 633.0 g of water that initally is at 16.0 deg C. Neglecting the heat capacity of the container, find the final equilibrium temperature (in deg C) of the lead and water.
A sports beverage company is seeking an energy supplement to increase the performance of the athletes. An ongoing research project suggest the use of a tetrasaccharide with the following characteristics
What is the molar mass of toluene if 0.85 g of toleune depresses the freezing point of 100 g of benzene by 0.47 degrees C. Kf of benzene is 5.12 degrees C/m.
when the explosion destroys the bomb casing the gas is released into the atmosphere where it reaches a pressure of 1.00 atm. what is the volume of the gas after the explosion? assume constant temperature and number of moles.
An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI, and then titrated with Na2S2O2 in the same manner as in your experiment
Calculate the concentration of Ag+ in a solution prepared by mixing equal volumes of 2.0×10-3M AgNO3 and 0.20M NaCN .
35.00ml of a .500 M HCl was mixed with 25.00ml of a .500 M NaOH. What is the pH of the solution after mixing?
Explain in detail why these bacteria don't begin to excrete this metabolite before using up the phenylalanine in the medium.
a) what is the ratio of conjugate base to conjugate acid after 100 ml of 1M HA is adjusted to a pH of 8? b) under the conditions in part a, how many moles of HA are present? How many moles of A- are present? c) What is the pH of the solution descr..
write the full electronic configuration for sr he zn
The Kc for the reaction of hydrogen and iodine to produce hydrogen iodide equals 54.3 at 430 C. Calculate the quilibrium concentrations of H2,I2, and HI if the intial concentrations are H2=I2=0M and HI=.525M.
f gas reacts with nh3 gas to produce n2f4 tetrafluorohydrazine or dinitrogen tetrafluoridenbspand hfhydrogen fluoride.
Iron has a density of 7.9 g/ cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm.
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