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Acetone is one of the most important solvents in organicchemistry, used to dissolve from fats and waxes to airplane glueand nail polish. At high temperatures, it decomposes in a firstorder process to methane and ketene (CH2=C=O). at 6.00 degreescelsius, the rate constant is 8.7 x 10^-3 s^-1.(a) What is the half-life of the reaction?(b) How long does it take for a 27% of a sample of acetone todecompose?(c) How long does it take for a 61% of a sample of acetone todecompose?
The natural uranium/lead "clock" technique can be used to estimate the age of rocks. assume that at the time of solidification from the molten state a rock contained the radioactive isotope uranium-238. U-238 decays to a stable end product, lead-2..
AgBr is the light-sensitive compound in most photographic films. Assume, when film is exposed, that the light energy absorbed dissociates the molecule into atoms.
assuming 100 dissociationa calculate the molar concentration of h ions in a solution made by diluting 25 ml of 0.1 m
Suggest why dichromate or permanganate reverses the benzoin condensation when benzoin is treated with the reagents
A calibration curve for absorbance versus the concentration of the chemical indicator crystal violet is found to have a slope of 19. If a sample of unknown concentration has an absorbance of 1.32
Octane has a density of 0.692 g/mL at 20 Celsius . How many grams of O2 are required to burn 1.30 gal of C8H18
Calculate the energy change for the alternative reaction that yields chlorine sodide (Cl+Na-) . 2Na(s) +Cl2 (g) yeilds 2Cl+Na+(s) Assume that the lattice energy for Cl+Na- is the same as that for Na+Cl-
Calculate ?G for the reaction A+A--> P+ Q at 37 degrees C when the equilibrium concentrations are [A]=1 µM [Q]=2 mM, [P]=4 mM. Is the reaction exergonic or endergonic under standard conditions
What is the maximum height, neglecting all forms of friction, to which a car of mass 1000 kg an be driven on 1.00 gallon of fuel given that the engine cylinder temperature is 2000 degrees celsius and the exit temp is 800 degrees celsius.
Determine the limiting reactant and also calculate how much of the gas is produced?
Which of the following signs on q and w represent ( work is done on the systemby gaining heat from the surrounding) ? a- q=+, w=- b- q=-, w=+ c- q= + ,w=+ d- q=- , w= -
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179g/mL , should be used to make 4.95 L of an HCl solution with a ph of 1.5?
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