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What are the signs of ?Hvap and ?Svap for water? Do you expect the signs of these quantities to be the same for other liquids? Explain.
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
what ions will the following elements form?
A solution is prepared by mixing 13.00ml of 0.0021M (aq) Hg2(NO3)2 with 25.0ml of 0.015M HCl. Assume that volumes are additive. A. Will precipitation occur?
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL
determine the mass of solid sodium formate of mw 68.0 must be combined to 150 ml of 0.66 moll hcooh to make a buffer
How many liters of flouridated drinking water would a 70 kg person have to consume in one day to reach this toxic level? How many kg of sodium flouride would be needed to treat a 7.49x 10^6 -gal reservior?
Calculate the % of acetic acid in vinegar is the mass of acetic acid is 0.104 g and the mass of the vinegar is 2.00 mL, assuming that the density of vinegar is 1.02 g/mL.
Draw the structures of the adduct of (i) 2 molecules of resorcinol with 1 molecule of furfural and (ii) of 3 molecules of resorcinol with 1 molecule of 5-hydroxymethylfurfural.
A mixture is expected to contain 9.2 x 10-4 M SO42- and 1.6 x 10-3 M C2O42-. If the Ksp values for BaSO4 and BaC2O4 are 1.1 x 10-10 and 1.0 x 10-6, respectively, determine if Ba2+ can be added to precipitate 99% of the SO4 2- from the solution wit..
Calculate the work done (in Joules) when 33.3g of tin dissolves in excess acid at 1.04 atm and 22 degrees C. Assume ideal gas behavior.
a 35.00 ml solution of 0.2500 m hf is titrated with a standardized 0.1356 m solution of naoh at 25 c.a what is the ph
Suppose 10.16 mL of the same thiosulfate solution reacts with the iodine replaced by 20.00 mL of an unknown solution of sodium hypochlorite. Calculate the weight, in grams, of available Cl in a liter of the unknown solution.
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