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what is the length of the unit cell when tantalum (atomic radius = 145 pm) crystallizes in a bcc structure?
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. determine the partial pressure of O2?
Using standard reduction potentials, calculate the standard E0 cell, (emf), for each of the following reactions. 1. Show half reactions 2. Balance and gain electrons 3. Write overall reaction of each
Professor Tipton, being an avid hunter, was stalking the woods for morels. He saw a giant morel next to a fallen tree. When he reached down to get it a small timber rattler bit his hand
The pressure and colume are simultaneously increased so that at every instant P and v are related by the equation, P = Av, where A is a constant.
Express your answer to three significant figures and include the appropriate units. 0.037 Correct Part B What pressure is required to achieve a concentration of 7.10×10?2 at 20?
a 4.5 g sample of LiCl at 25 C dissolves in 25 mL of water also at 25 C. The final equilibrium temperature of the resulting solution is 60.8 C. What is the enthalpy of solution.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
How many joules of heat are required to heat 167 g of aluminum from 34.0 oC to 66.5oC?
A current of 4.67 A is passed through a Sn(NO3)2 solution for 1.80 hours
assign absolube stereochemistry (R or S) to each of the stereocenters in (+)menthol
the mass of water is 92.6 grams, the initial temperature of the water is 58.9 degrees celsius, the mass of teh liquid nitrogen added to the water is 57.1 grams, and the final temperature after the liquid nitrogen has vaporized is 29.6 degrees cels..
A dancehall contains 173 men and 238 women. A certain "promenade" calls for the formation of groups, with each group consisting of one man with two women.
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