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Question- If .020 mol of NaOH were added to .500L of a sodium acetate-acetic acid buffer that contained .10M NaC2H3O2 and .15 M HC2H3O2 , by how many pH units would the pH of the buffer change?
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The amount of nitrogen in an organic substance can be determined by an analytical method, called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammoinia.
What volume of 5.00 M solution (in mL) of calcium nitrate is needed to prepare 500.0 mL of a 0.250 M solution of calcium nitrate
In a laboratory 6.80g of Sr(NO3)2 is dissolved in enough water to form 0.450L of solution. A 0.120L sample is withdrawn from this stock solution as well as titrated with a 0.0300M solution of Na2CrO4.
describe how to prepare 2.0 liters of a .20 m naoh solution from 50. ww naoh solution that has a density of 1.53 gml
question how do you determine the charge of an electron when given the number of moles of electrons and the amount of
Methanol burns in oxygen to form carbon dioxide and water. 2CH3OH+3O2=2CO2+4H2O. Calculate the rxn of delta H, G & S at 25C
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In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 23.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe?
If 155mL of wet {grm{H}}_2 is collected over water at 24 ^circ {rm C} and a barometric pressure of 739torr , how many grams of {grm Zn} have been consumed.
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