Calculate the final temperature of the mixture
A 29.0-g sample of water at 260. K is mixed with 48.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
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The background LSC vial gave 1.2 cpm. Calculate the 239Pu concentration in molarity, and the associated uncertainty. Assume 100% efficiency for LSC, and (+ or -)0.5mL as the micropipette uncertainty.
Draw the structure of the bromohydrin formed when (E)-2-hexene reacts with Br2/H2O. Draw each stereoisomer as a separate structure, using wedge and dash bonds to indicate stereochemistry.
Three equal point charges, each with charge 1.85 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.250 m. What is the electric potential energy U of the system? (Take as zero the potential energy of the three
A molecule of ammonia, NH3, and a molecule of methane, CH4, each have 4 electron domains. Draw or describe the Lewis dot structures for each of these molecules.
By combining your answers in A and B, and using average bond enthalpies for C-H, calculate average bond enthalpies of the carbon-carbon bonds in C6H6(g).
What is the percentage yield if 465 grams of hydrogen reacted with excess nitrogen and 455 grams of ammonia is formed N2 (g) + 3 H2 (g) 2NH3(g)
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, what is the "hang time"?
Calculate the molarity of each of the following solutions: (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution, (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution, (c) 9.00 g of sodium chloride (NaCl) in 86.4 mL of solution.
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