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The chemical formula for caffeine isC8H10N4O2. Explain how many grams of carbon are present in a 12.46 gram sample of caffeine?
calculate the specific heat of molybdenum metal in rm jg cdot circ c. the specific heat of water is 4.184rm jg cdot
if a saturated solution of NH4NO3 at 70 degrees Celsius was cooled to 10 degrees Celsius, how many grams of solute will separate if the quantity of the solvent is 98 grams?
Specify those structural characteristics of a phase transfer catalyst that allow it to be soluble in both organic and aqueous solvents.
determine the temperature at which the reaction will become spontaneous. See the section on Free Energy and spontaneity in our book. You will also find Appendix C very helpful as well. The delta H for the reaction is 90.84 kiloJoules/mol
It takes 45.0J to raise the temperature of an 9.80g piece of unknown metal from 13.0C to 24.0 C. What is the specific heat for the metal
an aqueous vinegar sample contains 5.4 acetic acid by mass and has a density of 1.006 gml. calculate the amount of
a sample of he gas has a volume of 900 ml and a pressure 2.50 atm at 298 k. what is the new? pressure when the
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
15.0 moles of gas are in a 8.00 litre tank at temperature of 24.6 degree celsius . calculate the pressurenbsp
A 275 mL sample of vapor in equilibrium with 1-propylamine at 25.0C is removed and dissolved in 0.500L of H2O.For 1-propylamine, pKb= 3.43 and the vapor pressure = 316 torr.
Based on their reduction potentials, what are the most likely cathode products in the electrolysis of an aqueous solution containing 1M LiCl, 1M FeCl2 and 1M CoCl2
A steel tank has a volume of 438 liters and is filled with 0.885 kg of Oxygen. Calculate the pressure of oxygen at 21 degrees Celsius.
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