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The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. Consider the following: Ni2+(aq)+2e- -> Ni(s), E red = -0.23 V Cu2+(aq)+2e- -> Cu(s), E red = +0.337 V What is the standard potential, E cell, for this galvanic cell? Express your answer to four significant figures and include the appropriate units.
Suppose a bone from an ancient human contains 17.5% of the {rm C}-14 found in living organisms. How old is the bone?
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
The balloon ascends to an altitude of 20 , where the pressure is 76.0 and the temperature is 50. . What is the new volume, , of the balloon in liters, assuming it doesn't break or leak
How many milliliters of O2 are consumed in the complete combustion of a sample of hexane, C6H14, if the reaction produces 789. mL of CO2? Assume all gas volumes are measured at the same temperature and pressure.
A water sample was taken from a lake. A 100.00mL portion of this sample was pipetted into a 250mL Erlenmeyer flask. EriochromeBlack T-indicator, sodium cyanide, and ammonia buffer
Methane and hydrogen sulfide form when 36g H2 reacts with carbon disulfide. calculate the percent yield if the actual yield of CH4 is 69.8 g
We place 1.32 mol PCl5 in a 1.0L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5 = PCl3 + Cl2 K= .47
isolate two of three compouds given 1,2,4,5- tetrachlorobenze, o-toluic acid and 1,4-dibromobenzene
A boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer and sanitizing the brewing tanks. 81.0% of the heat produced by the boiler is used to create saturated steam at 18.0 bars (absolu..
What is the initial (before any reaction takes place) lead nitrate concentration when 4.0 mL of 0.034 M lead nitrate is added to 11 mL of 0.0052 M sodium chloride
How many mL of 0.0221 M KMnO4 would it take to titrate a 0.5255 g sample of K3Fe(Ox)3? How could the results of your titration be used to determine if the sample was actually a mixture of K3Fe(Ox)3 and K4Fe(Ox)3
Amixture of nitrogen and water vapor is admitted to a flask whichcontains a solid drying agent. Immediately after admission, thepressure of the flask is 760 mm Hg.
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