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The wrench applies a 10 N·m couple moment to the bolt. To prevent the plate from rotating, two 2 N forces are applied as shown. Determine the distance s such that the resultant couple moment acting on the plate and bolt is zero.
In the reaction given below, for every 12 molecules of aluminum oxide consumed, how many molecules of oxygen are produced. 2Al2CO3 ---> 4 Al + 3 O2
Another Reaction, A -> Products, is a first order reaction. An experiment was performed at 25C which determined the rate constant is 0.015min^-1. THe activation energy of this reaction is +34.8kJ/mol. Calculate the temperature, in C, of the reacti..
Problem- Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell. How many hours will it take to plate 14.0 kg of nickel onto the cathode if the current passed..
What volumes of the stock solution will you have to pipet into the flasks to prepare standards of 1.00, 2.00, 5.00 and 10 x 10 -3 M KMnO4 solutions?
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
A balloon has a volume of 1.20 at 24.0 degrees Celsius. the balloon is heated to 48.0 degrees Celsius. calculate the new volume of the balloon.
What volume (in milliliters) of 0.250 M NaOH should be added to a 0.120 L solution of 0.023 M glycine hydrochloride
calculate the new temperature in Celcius- tank of helium gas with a pressure of 270 torr at 4 degrees celcius is heated to give a pressure of 1500 torr
What is the fraction of association for the following potassium propinate solutions? Ignore activities. The Ka of proponoic acid is 1.34*10^-5.
Assume that you carry out the reaction with 25.0 gr of cyclohexane (limiting reactant). What is the theoretical yield of adipic acid. If you obtain 33.5 gr of adipic acid, what is the % yield for the reaction
The average brewed cup of coffee contains 453 mg/L caffeine. What volume (in ml) of coffee should be diluted to 25ml prior to analysis using only standard transfer pipets with integer values from 1-10ml
Calculate the pH of a strong acid solution formed by mixing 34.2 mL of 0.0496 M HBrO3 with 77.5 mL of 0.0728M H2SO4.
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