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Calculate the change in internal energy of the following system: a 100.0- bar of gold is heated from 25 to 50 during which it absorbs 322 of heat. Assume the volume of the gold bar remains constant.
What is the final concentration of (in M) 15.7 mL potassium hydroxide solution with an initial concentration of 1.553 M which is diluted with 15.6 mL of solvent? Assume the volumes are additive.
Why do aldehydes undergo nucleophilic addition faster than ketones? Explain based upon the transition state (applying Hammond's principle) and electronic and steric actors.
Compute the difference in pressure between CH4 and an ideal gas if 14.0 moles of gas are in a 6.00 litres tank at the temperature of 21.1 degree celsius . The van der Waals constants for CH4 are a =2.300 L^2 x atm/mol ^2 and b=0.0430 L/mol.
Use the Nernst Equation to calculate Ecell at 25 C for electrolysis of aqueous sodium chloride if the concentration of chlorine in the brine solution is 4.5 M and the partial pressure of Cl2 is 0.001 atmospheres.
If 205 grams of water at 31C absorbs 281kJ of heat from a mountain climber's stove at an elevation where the boiling point of water is 89C, is this amount of energy sufficient to heat
A rectangular block has dimensions 2.9 cm 3.5 cm 10.0 cm. The mass of the block is 615.0 g. What are the volume and density of the block?
The internuclear distance in NaCl(g) is 2.3606 angstrom, whereas in NaCl(s) the shortest Na-Cl distance is 2.814 angstrom. Explain why this should be so when the binding energy is larger in the crystal.
The equation for the combustion of acetone is: 2 C3H6O + 8 O2 ---> 6 H2O + 6 CO2 + 852.6 kcal How much heat will be given off if 0.87 mol of acetone is completely burned?
Calculate how many milliliters of 0.100 M HCl shoule be added to how many grams of sodium acetate dihydrate (NaC2H3O2 x 2H2O) at 5 degrees C to prepare 250.0 mL of a 0.100 M buffer at a pH=5.00. At 5 degrees C
A soft drink contains 35 mg. of sodium in 316g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
what pressure would be required for helium at 25C to have the same density as carbon dioxide at 25C and 1.00 atm?
How many grams of MnSO4 can be prepared from the reaction of 15.0 g of KMnO4 with 22.6 g of H2SO3.
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