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In an experiment, 3.00 mL of 0.0647 M A, 2.00 mL of 0.0896 M B, and 5.00 mL of distilled water are mixed in a beaker. After the reaction has reached equilibrium, the absorbance of the product C is measured and its concentration is determined to be 0.00745 M. Calculate the equilibrium constant for this reaction.
A(aq) + B(aq) ----> C(aq)
Use regression analysis to investigate the relationship between the number of fatal accidents and the percentage of drivers under the age of 21. Discuss your findings.
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
What is the mass of a square piece of aluminum foil 100 micrometers thick and 10 cm wide? (Aluminum=2.7 g/cm^3)
How many mL of each solution should be diluted to 500 mL to make 0.100 M reagent?
A 130 mL stock solution contains 1.3 M Na3PO4. When 10 mL of the stock solution is diluted to 21 mL, what will the concentration of Na+ ions be?
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution?
sample of anhydrous salt sodium sulfate Na2SO4 is allowed to absord water to form the decahydrate salt.
The benzene-toluene system obeys Raoult's law because benzene and toluene molecules have similar shapes and electronic structures
A balloon ?lled with helium gas has a volume of 434 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
how many moles of ethylene glycol should be added to the radiator to lower the freezing point of the water from 0 degrees celcius to -18 degrees celcius?
A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
The mixture did not rotate the plane of polarized light before. How had the mold changed the solution to become optically active?
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