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The level of CO2 in blood (as H2CO3) can be determined by accurately measuring the pH and then titrating the amount of bicarbonate. Calculate the molar concentration of CO2 for a sample that has a pH of 6.220 and a HCO -3 concentration of 0.0020 M. For carbonic acidpKa1=6.33 and pKa2=10.35.
calculate the change in the entropy of the universe between the time that the contents of the glass enter the lake and when thermal equilibrium is subsequently restored. State any approximations made in your calculation.
a solid with an irregular shape and a mass of 11.33 g is added to a graduated cylinder filled with water
The elemental mass percent composition of malonic acid is 34.63% , 3.87% , and 61.50% . Determine the empirical formula of malonic acid. Express your answer as a chemical formula.
A voltaic cell is created with one half-cell consisting of a copper electrode immersed in 1.0 M CuSO4 solution and the other half cell consisting of a lead electrode immersed in a 1.0 M Pb(NO3)2 solution. Each half-cell is maintained at 25o C. Wha..
A 100 mL buffer solution initially has 1.00 M HClO (Ka = 3.0 × 10-8) and 0.75 M NaClO. What is the new pH when this 100 mL of 0.10 M NaOH is added to the initial buffer solution?
Butyric acid is responsible for the foul smell of rancid butter. The pKa of butyric acicd is 4.84.
If 35.0 g each of iron and chlorine react, how much FeCl3 will be formed?
write the overall equation for the reaction b. Give a detailed reaction mechanism for the reaction showing all steps and intermediates
An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation for this behavior is that as the temperature increases
At a certain temperature, the equilibrium constant for the reaction 2HI(g)39. At a certain temperature, the equilibrium constant for the reaction 2HI(g) H2(g) + I2(g) is 0.49.
What is the theoretical mass of xenon tetrafluoride that should form when 130 g of xenon is reacted with 100 g of F2? What is the percent yield if only 145 g of XeF4 is actually isolated?
How many kilograms of chalcopyrite must be mined to obtain 290. g of pure Cu ?
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