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A student designs an ammeter (a device that measures electricalcurrent) that is based on the electrolysis of water into hydrogenand oxygen gases. When electrical current of unknown magnitude isrun through the device for 2.50 min, 10.2 mL of water-saturated H2 (g) is collected. Thetemperature of the system is 25.5 degrees Celsius, and the atmospheric pressure is 768 torr.
What is thmagnitude of the current in amperes?
What volume of 0.200M Iron(II)sulfate solution would be required to react with 20.0mml of 0.250M potassium permangante(in sulfuric acid solution)?
identify the compound in each of the following pairs that reacts with sodium iodide in acetone at the faster rate 1-Chlorohexane or cycleohexyl chloride
Write the chemical equation(s), including state symbols, for what happens when the following ionic compounds are placed in water. Are these substances reacting with water when they are added to water
A 100.0ml of sample of drinking water was buffered at PH 10.0 and after the addition of Calmagite indicator, required 35.41ml of 4.652X10^-3 m EDTA to reach the end point for the titration. Calculate the total hardness of the water in ppm of CaCO3
A mixture of 7.50 g He and 29.5 g Ne has a pressure of 750. mm Hg. What is the partial pressure of each of the gases?
What is the final volume of the balloon. Assume that the pressure inside and outside the balloon has the same value. Ans. V = 34.8 L
A galvanic (voltaic) cell consists of an electrode composed of zinc in a 1.0 M zinc ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for this cell..
Given the three formation equations and their enthalpy values, calculate the enthalpy of the given reaction.
Erythro-2,3-dibromo-3-phenylpropanoic acid undergoes eliminiation by an E1 pathway in water solvent (Part A conditions),
How do you arrange PV=nRT to give equation relating pressure to concentration and use it to modify Beer's Law to apply to gas pressure? Write a formula that relates absorbance to gas pressure.
The wavelength of the fundamental N-H stretching vibration is aobut 1.5 µm. What is the approximate wavenumber and wavelength of the first overtone band for the N-H stretch
a 2.40-g sample of a large biomolecule was dissolved in 12.0 g of carbon tetrachloride. the boiling point of this
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