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How much heat is released when 105 grams of steam at 100.0 degrees celsius is cooled to ice at -15.0 degrees celsius? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity pf liquid water is 75.4 J/(mol x degrees Celsius) and the molar heat capacity of ice is 36.4 J/(mol x degrees celsius).
Arrange the items on the food chain according to increasing mercury levels: microorganisms, people, small fish, and sharks.
A sample of magnesium sulfate heptahydrate having a mass of 7.35 g. is dried completely. How many grams of dry product are expected to be found
Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. a) Boron trifluoride - mole ratio - partial pressure b) Sulfur hexafluoride -mole ratio -partial pressure
Hard water contains Ca2+, Mg 2+, and Fe2+. Water softeners replace these ions with Na+. If 1.0 X 10^3L of hard water contains 0.010 M Ca2+ and 0.0050 M Mg2+
Provide structures of the two allylic free radical intermediates in this reaction. b. Provide structures of the two substitution products in this reaction. c. Identify and circle the major product in (b) above.
a mixture of 60.0 zns and 40.0 cus is heated in the air until the sulfides are completely converted to oxides as shown
Using the volumes of sodium EDTA solution you just entered and the corresponding calcium carbonate masses entered earlier, calculate the molarity of the sodium EDTA solution for each trial.
benefits of using a more favorable direction of the reaction for a routine enzyme activity assay
If 26.95 mL of a standard 0.1650 M NaOH solution is required to neutralize 37.17 mL of H2SO4, what is the molarity of the acid solution
How much work does a gas system do on its surroundings at a constant pressure of 1.00 atm if the volume of gas triples from 250.0 mL to 750.0 mL
If the actual yield is 220.0 g and the theoretical yield is 275.6 g then what will be the percent yield of ferrous sulfide.
The density of ethanol is 0.789 g/cm3. What is the density of the object?
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