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A certain box contains 100 particles of an ideal gas.
How many times more likely is it to find the particles evenly split between the left and right halves of the box, than to find 80 particles on one side and 20 on the other?
The radioactive decay of Tl-206 to Pb-206 has a half-life of 4.20 min. Starting with 3.70 1022 atoms of Tl-206, calculate the number of such atoms left after 38.0 min.
Explain what is the minimum value of K the partition coefficient that would allow for the extraction of 99.95% of a solute from 100mL of water with five successive 50mL portions of ether
A mixture is made by mixing 40.7 mL 0.000200 M HCl with 38.3 mL of 0.000180 M NaOH. Based upon these values, the mixture's pH will be
Determine the mass in grams of Ni in the original sample? Determine the weight percent of Ni in the sample?
give answers with units and to correct significant figures.1 how many years are there in 1 mole of seconds? use
For FeCO3 dissolving in acid solution, the value of Keq is 0.66, calculate the concentration of Fe2+ in a solution obtained by treating solid FeCO3 with 0.342 M HNO3.
in your house elevation 950ft above sea level you have a barometer that registers inches of mercury. on an average day
How do you figure out how to make a solution of 50mL of 3.6M hydrogen peroxide (H2O2) from 30% hydrogen peroxide
Three Liters of gas at STP is mixed with another 3 liters of gas at STP. The volume is then reduced to 1 liter at standard temperature. What is the pressure?
Why is the theoretical maximum final temperature reached by the water in a calorimeter always slightly higher than the highest recorded temperature
Calculate the free energy change for the combustion of methane at 250oC. Assume that all reactants and products are gases and that the pressures of the various gases of interest are: methane = 0.56 atm, oxygen = 0.45 atm, carbon dioxide = 2.10 atm..
What is the solubility of lead fluoride in a solution of 0.050 M of sodium fluoride?
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