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A chemist is trying to come up with a new solution-based battery for use in a new car. He chooses iron and zinc as the metals for his research and .25 M concentrations for both Fe2+ and Zn2+ solutions. Will this battery be expected to work equally well in a hot summer and cold winter? why?
How many amps are required to produce 72.5 g of potassium metal from a sample of molten potassium chloride
A 25.0 mL sample of a 0.115 M solution of acetic acid is titrated with a 0.144 M solution of NaOH. Calculate the pH of the titration mixture after 10.0, 20.0, and 30.0 mL of base have been added.
If 1.00 mole of HI is put into an evacuated 1.00-liter container at 490 degrees C and allowed to reach equilibrium, how much H2 will be present at equilibrium in the reaction H2(g) + I2(g) 2HI, K=45.9 at 490 degrees C?
How would I find the percent yield and theoretical yield if I have 0.76 g of 3-nitrobenzaldehyde to start out with, 0.60mL of acetophenone required for the reaction between p-anisaldehyde and acetophenone
suppose the condenser operates as a total condenser at 40 degrees, the production rate of the overhead product is 75kmol/h. The ratio of reflux and overhead product is 1.5:1.
The lengths of chemical bonds in H2 and in other compounds formed from hydrogen isotops is about .74 x 10^-10 m. Estimate the bond length in molecules where the muon replaces the electron.
A 35 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after 30 mL of acid have been added.
How many moles of Ba(OH)_2 are present in 255 mL of 0.800 it M Ba(OH)_2?
If 18.2 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia.
How would (The weak base sample was impure, containing about 5% inert material) affect the values of Ka for the weak acid unknown and the values of the molar mass for the disodium salt
Each uranium atom that decays eventually results in the formation of one lead atom. Assuming that the rock did not contain any lead-206 atoms originally, find the age of the rock when the ratio of uranium to lead atoms is 8 to 1.
C2H6+O2 ---> CO2+H2O Calculate the mass of H2O that should form if 1.5 g of C2H6 is combusted in the presence of 2.5 g of O2.
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