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Water with an alkalinity of 2.00*10to negative 3eq/lhas a ph 7.0 calculate [co3][HCO3]-[CO3] and [OH]-
The energy of electron-in-a 1 m box is given as (h^2*n^2)/(8mL^2). find the transition energy form n=3 to n=2. The mass of electron is 9.109e-31 kg and planck constant 6.626e-34 Js
it was found that 19.31 ml of an hcl solution are needed to react completely with 322 ml of a lioh solution that has a
In Europe, gasoline efficiency is measured in . If your car's gas mileage is 38.0 , how many liters of gasoline would you need to buy to complete a 142- trip in Europe. Use the following conversions:
what is the wavelength ,in nanometers, of light with an energy content of 1979Kj/mol. In what portion of the electromagnetic spectrum in this light
the summit of Mt. Humphreys, the highest point in Arizona, is 12,600 ft. How many meters is this
identify the stronger acid in each of the following pairs a)NH4^+ or H3O^+ b)H2SO4 or HCN c)H2O or H2CO3
How many milliliters of a 235 mL solution of 1.5 M AlCl3 must be used to make 61 mL of a solution that has a concentration of 0.5 M Al3+?
A gaseous mixture of O2 and N2 contains 39.8\% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 385mmHg
what compounds would you use and how would testing these two compounds contribute in your knowledge of the above mentioned subjects
A flask of unknown volume was filled with air to a pressure of 3.23 atm. This flask was then attached to an evacuated flask with a known volume of 8.00 L, and the air was allowed to expand into the flask.
An aqueous antifreeze solution is 40.0% ethylene glycol, C_2H_6O_2, by mass. The density of the solution is 1.05 g/ml. Calculate the molality of the ethylene glycol.
Determine the volume of a 0.510 M KMnO_4 solution required to completely react with 2.90 g of Zn.
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