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What is the pH of a solution that results from addition of 100 ml of 1 M HCl (a strong acid) with 100 ml of 1 M NaOH (a strong base)? What species are present in this solution?
What is the pH of a solution that results from the addition of 100 ml of 0.1 M NaOH with 100 ml of 0.1 M CH3COOH (acetic acid) Ka = 1.8 x 10-5? What species are present in this solution?
Phosphate systems form necessary buffers in organisms. Compute the pH of a buffer made by dissolving .8mol of NaOH in .5L of 1M H3PO4.
determine the blood volume of a rabbit from the following data. a 2.8 ml volume of radioactive plasma with a activity
what concentration of sodium hydroxide is needed
Mass of dried sample plus evaporating dish
Carbon-14 is a radioactive isotope which decays with a half-life of 5730 years. What is the first-order rate constant for its decay, in units of years^-1
A volume of saline solution had a mass of 37.6g at 4 degrees Celsius. An equal volume of water at the same temperature had a mass at 36.2g. What is the density of the saline solution?
What is the percentage yield when 28.16 g of carbon dioxide is formed from the reaction of 4.00 moles of
what is the molarity of a solution prepared by adding 132 grams potassium chloride to enough water
If it took 14.4 ml of KMnO4 to titrate a solution that contained .6504 g of KMnO4 and 1.0012 g of an iron containing unknown substance What is the molarity of the KMnO4, moles of MnO4- and Fe2+ and the mass of the Fe2+
An iron ore sample is a mixture of Fe2O3 and several impurities. A 752. g sample of the impure iron ore is heated with excess carbon.
If a temperature increase from 22.0 degrees Celsius to 33.0 degrees Celsius triples the rate constant for a reaction, what is the value of the activation barrier for the reaction
Explain how many metric tons of 5%-S coal would be required to yield the H2SO4 required to produce a 3.00-cm rainfall of ph 2.00 over a 100-km2 area
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