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You take a course in archaeology that includes field work. An ancient wooden totem pole is excavated from your archaeological dig. The beta activity is measured at 150 cpm. If the totem pole contains 260 g of carbon and the ratio of carbon-14 to carbon-12 in living trees is 1.3 ? 10-12, what is the age of the pole?
If the particle behaves classically as in the limit of very larger values. Explain what would be the probability of finding it between 0.30a and 0.36a. Compute the probability of finding the quantum mechanical particle between 0.30a and 0.36a for ..
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor?
Problem- Before the industrial revolution, the concentration of CO2 in the Earth's atmosphere was about 275 ppm. Considering the effect of dissolved CO2 only, calculate the effect that the increase in CO2 has had on the pH of precipitation.
At a given temperature the vapor pressures of benzene and toluene are 183mm Hg and 59.2mm Hg. Calculate the mole fraction of benzene in the vapor phase over a solution of benzene and toluene with Xbenzene=0.600
Supply the missing reactant in the following nuclear reaction. Supply the missing reactant in the following nuclear reaction: ? + 10e
the half life increased from 2.0 min to 4.0 min at 25C. Calculate the the order of the reaction and the rate constant.
Would Fischer esterification be a useful process for converting fumaric acid into its mono methyl ester
the active ingredient in toothpaste is sodium fluoride, an anticavity agent. a 170 g tube of toothpaste lists the concentration of sodium fluoride a s0.24%. how many grams of sodium fluoride are in a toothpaste.
a ball of aluminum c 0.897 jgdegc has a mass of 100 grams and is initially at a temperature of 150degc. this ball is
Compute the values of (x^3) and (x^4) for a harmonic oscillator by using the relations
Calculate the time in hours which would have been required for 99.9% of the t-butyl chloride to hydrolyze, if the reactant had been allowed to proceed without the addition of extra water or heating.
What is the pH of a one liter mixture of .15 M nitrous acid and .20 M sodium nitrite after .020 mol of HCl have been added (no change in volume). (Ka for nitrous acid is 4.0x10^-4.
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