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Assume that an extra 2 feet of wire are needed to attach the wire to the ring and the pole. What length of wire is needed for the job?
For the diatomic molecule F-Br the following values are known. Determine the partial charge on each element. (1D = 20.8 e-pm)
What is the length of the (inner lane of the track), including the circular legsx, and what is the area of the infield of the track?
Why does it take a temperature of almost ,800 degrees C to melt NaCl, but stirring in water at room temperature will also effect a break-up of the lattice?
Explain whether you expect the bond in each molecule to become stronger, weaker, or unchanged upon 1-electron oxidation and 1-electron reduction (HCL HF)
80 people enter the race, and they each pay an entry fee of $20. Assuming they are all equally likely to win, what is a fair price for the competition? Round to the nearest cent.
A sample of KClO3 was heated and 350. mL of O2 was collected over water. What mass of O2 was collected? Room T = 23°C, P =675. mmHg.
When comparing the experimental IR spectra to the literature IR spectra of the same compound, the positions and strengths of some of the peaks were slightly different. Why is this so?
The vapor pressure of chloroform is 40.0 torr at -7.1 degree Celsius. Its enthalpy of vaporization is 29.2 kJ/mol. Calculate its normal boiling point.
Calculate the mass of gold in 20.0 mL of 1.0 mM HAuCl_4. What is the theoretical number of 13 nm nanoparticles that could be formed in this solution?
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 35.8 mL of hydrogen gas over water at 27 degrees C and 751mmHg. How many grams of aluminum reacted.
What is the maximum body accumulation of methylmercury at a constant ingestion rate of 4 mg of mercury per day?
Chymotrypsin is initially synthesized as an inactive precursor, chymotrypsinogen. How is it activated and what are the advantages and disadvantages of this type of activation?
Define in one or two sentences the following terms + Indicate one step in glycolysis in which they are significant. kinetic perfection and substrate level phosphorylation.
In a titration of HCL, I have a molarity of 0.991 NaOH and a volume of 7.6 mL to reach an equivalence point for the titration. I need to figure out the number of moles of NaOH from these figures. Pl
A mixture of these these gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of
If technetium-99 has a half-life of 6.0 hours, what percent of an administered dose of 100 mg of technetium-99 remains in the patient's body after 48 hours?
How many photons are striking each cm2 in 1.0 minute? Assume the wavelength of sunlight absorbed is 460 nm.
Silicon Carbide, which has the emperical formula: SiC, melts at 2830 deg C. and is nearly as hard as boron nitride and diamond. Which category of substances does it most likely fit under?
What is the side reaction that occurs or what side products are generated during a thiamine catalyzed benzoin condensation reaction
When trimethylamine, (CH3)3N, dissolves in water, it partially ionizes, producing the trimethylammonium ion, (CH3)3NH+. What effect, if any, would dissolving trimethylammonium chloride [(CH3)3NHCl], a
A ship leaves port and travels due east 15 nautical miles. How would you find the bearing to the port of departure, andhow would you draw the diagram for this problem.
The temperature of a 500.mL sample of gas increases from 150. K to 350. K. What is the final volume of the sample of gas, if the pressure in the container is kept constant?
A 0.9157-g mixture of CaBr2 and NaBr is dissolved in water, and AgNO3 is added to the solution to form AgBr precipitate. If the mass of the precipitate is 1.6930 g, what is the percent by mass of Na
A thin lead apron is used in dental offices to protect patients from harmful X rays, If the sheet measures 75.0 cm by 55.0 cm by 10.cm, and the density of lead is 11.3 g/cm^3, what is the mass of th