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A balloon filled with 39.1 mol of He gas has a volume of 875 L at 0.0 degrees Celsius and 1.00 atm. The temperature is increased to 38.0 degrees Celsius as the balloon expands to 998 L at constant pressure. Calculate delta E for the He sample. C He = 20.8 J/mol*K
Write the cell reaction and electrode half-reactions, and calculate the standard potential for each of the following cells: a) Pt|Fe3+(aq),Fe2+(aq)||Sn4+(aq),Sn2+(aq)|Pt
Calculate the entropy change when argon at 25 °C and 1.00 bar in a container of volume 0.500 dm3 is allowed to expand to 1.000 dm3 and is simultaneously heated to 100 °C.
What is the the mole fraction of a solution prepared by dissolving 0.315 g of cholesterol
Why can a first nitration be done at 0 degrees Celsius but the ice bath is removed to complete the reaction in a dinitration
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10 -5.
A 19.91 g sample of Mo2O3(s) is converted completely to another molybdenum oxide by adding oxygen.
how much energy is needed to heat 24.8g water from 64 degrees to 123 degrees celsius?
A second sample of this acid weighing 3.00 grams is added to the tirated sample and the pH is 6.60. Calcualte the molar mass of the unknown acid and determine the value of Ka for this acid.
The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is __________ kJ. The specific heats of ice, water, and steam are and respectively. For H2O, Hfus = 6.01 kJ/mol, and
Identify the product of the nuclear reaction by providing its atomic number symbol, mass number, and atomic number.
Draw a diagram of a molecule of H2O ( Water), showing the outer layers and how the individual electrons are shared. 3. Why does each atom feel more stable?
A solution is prepared by dissolving 27.1 g urea, (NH2)2CO, in 171.2 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte.
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