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Explain Zinc sulfide reacts with nitric acid to give zinc sulfate and nitric oxide. Compute the mass of zinc required to react with 110mL of 0.15 M nitric acid
Consider a 2710-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car? in mph
Calculate the Ki for a competitive inhibitor whose concentration is 6.5x10-5M that increases the Km of the substrate
Consider methyl cyanide, H3CCN. a.) Draw the best possible Lewis structure of methyl cyanide. b.) Predict the geometry and hybridization of each carbon atom. c.) Describe the bonding in this molecule in terms of sigma
Calculate the concentrations of species in solution and the pH when 0.1 moles of FeSO4 are placed in 1 L H2O at T=25 deg C. Consider hydrolysis and assume ideal solution. The pK of FeSO4 is 10^-2.65.
assume that 3.0g of aniline and 4.5 ml of acetic anhydride are used in the preparation of acetanilide according to the
When 150. mL of 0.400 M H+ are mixed with 200. mL of 0.500 M OH-, the final temperature of the solution is 26.5°C. What was the initial temperature of the solution before the reaction occurred
Sodium-24, a beta-emitter used in diagnosing circulation problems, has a half-life of 15 hours. A. Write the balanced nuclear equation for this emission. B. What fraction of sodium-24 remains after 50 hours
What is molecular weight of a gas that effuses 1/4 as rapidly as CH4? I need to know how to SOLVE the problem. The answer should be 256.
A mixture of 65 mol% methane, 30 mol% hydrogen, and 5 mol% nitrogen is burned to heat a boiler used to produce hot steam. The ratio of CO2 to CO in the exhaust gas is 10:1.
What is the molecular formula?
Compute the osmotic pressure in torr of a solution containing 18.75 mg of hemoglobin in 15.0 mL of solution at 25.0oC. Define the molar mass of hemoglobin is 6.5 x 104 g/mol
A hydrogen atom is removed from the first carbon atom of a butane molecule and is replaced by a hydroxyl group. Draw the new molecule formed.
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