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The vapor pressure of ethyl ether is 7.87 in. Hg at 2°C; 11.8 in. Hg at 12°C; 27.5 in. Hg at 32°C; 29.9 in. Hg at 35°C; 39.3 in. Hg at 42°C. What is the normal boiling point of ethyl ether?
A 122 piece of metal is heated to 285 and dropped into 84.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal.
Hemoglobin has a positive charge of +5 and a radius of 3.55 nm in water. How far will the protein travel in one hour in an electrophoresis gel at 25C when a field
A steel railroad bridge uses a zinc sacrificial anode to limit the extent of oxidation of the steel. If a 5.1 kg anode is completely ozidized to Zn2+ over the course of 15.5 years, compute the average current flowing through the anode.
equilibrium constant Kc for the reaction: H2 (g) + CO2 (g) - H2O (g) + CO (g) a) in one experiment, a container is introduced in a mixture formed by the four shown in the reaction gases
A uniformly charged thin ring has radius 14.5cm and total charge 23.0nC . An electron is placed on the ring's axis a distance 30.0cm from the center of the ring and is constrained to stay on the axis of the ring. The electron is then released from..
Naturally occuring iodine is iodine-127. medically, radioactive isotopes of iodine-125 and iodine-130 are used. a)write the atomic symbol for each isotope. b)in what ways are the isotopes similar, and in what ways do they differ
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
Finding Number of Atoms in a Molecule from Molecular Weight, As determined from the gas law, the molecular weight of a substance is eight times the atomic weight
How would you distinguish between the following pairs by use of infrared spectroscopy only? Tell what absorption would be present or absent in each case. Write balanced equation for the oxidation of tolualdehyde
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion con..
In this experiment we reduced methylene blue with ascorbic acid using HCl as a catalyst. Given that the half reaction for the reduction of methylene blue is MB+(ox) +2H +2e -----> MBH2
A 643 mL gas sample at STP is compressed to a volume of 187 mL, and the temperature is increased to 33?C. What is the new pressure of the gas in Pa? Answer in units of Pa.
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