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When a piece of gold that weighs 182 grams is added to 250 g of water at 25 degrees C, the resulting temperature of the mixture is 27.5 degrees C. If the specific heat of gold is 0.129 J/g degrees C
Calculate the heat that the water absorbed from the gold.
Determine the initial temperature of the gold
The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
To find the pKa of X-281, you prepare a 0.087M test solution of X-281. The pH of the solution is determined to be 2.40. What is the pKa of X-281?
The formulas for ethane, ethene, and ethyne are C2H6, C2H4, and C2H2 respectively. Rank these compounds by the length of the carbon-carbon bond. Longest C-C Bond to Shortest C-C bond
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
Consider the formation of nitryl fluoride: 2NO2+F2=2NO2 the reaction is first order in F2 and second order overall. what is the rate law
Describe all the symmetry planes in methylene chloride Draw a figure and arrows to show any symmetry exes in methylene chloride. Also state how many fold.
On the previous problem set, you examined both radial wavefunctions and radial distribution functions. Do the two functions display radial nodes at the same places?
Use Huckel molecular orbital theory to answer the following questions. Express energies as functions of the parameters α and β.
What is the area of the circuit element in ? Write your answer in scientific notation. Round your answer to significant digits.
At what temperature is the molar volume of an ideal gas equal to 22.4L, if the pressure of the gas is 2.5 atm
Why does the addition of the NO2+ to the acidic solution of acetanilide need to be performed at a cold temperature. What products would form if the temperature is not kept cold
CaCO3(s)+2HCl(aq) -> CaCl2(aq) +H2O(l) +CO2(g) How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 12.0 g of hydrochloric acid. Which reactant is in excess and how many grams of this reactant will..
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