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What is the pH at the equivalence point of a weak base-strong acid titration if 20.00 mL of NaOCl requires 28.30 mL of 0.50 M HCl? Ka = 3.0 × 10-8 for HOCl.
the formation of so3 from so2 and o2 is an intermediate step in themanufacture of sulfuric acid and it is also
Write the correct equation accounting for the ready formation of metallic deposit on placing a magnesium strip into 0.1 M iron nitrate
Calculate the heat of solution, DeltaH_soln, of KCl. Assume that the specific heat of the solution is identical to that of water, 4.18 J/(g/C).kj/mol
What is the molarity of the HCl solution if 270 mL of the HCl solution reacts with magnesium to produce 7.40 L of H_{2} gas measured at STP.
Pure liquid water can be supercooled to temperatures below its freezing point. Consider 10 kg of water cooled as a liquid to -10 Celsius. Let's now add a small crystal of ice (whose mass is negligible) as a "seed"
A chemist is commissioned to produce 50,000 liters of 0.550 M aqueous phosphoric acid. The chemist can purchase solid, 98.64% pure, phosphoric acid to dissolve in water. How many grams of this reagent are required?
if 6.795 g of alum was produced using the method in this experiment, how many grams of hydrogen gas could theoretically have been produced
A gas temperature at 100C occupies a volume of 154 mL. What will the volume be for the same amount of gas at a temperature of 10C, assuming no change in pressure?
A 0.625 mole sample of N2 gas at 1.50 atm and 45C occupies a volume of 10.9L. What volume in liters would each of the following molar sized samples of gas occupy at the same temperature and pressure. a) 2.00 moles CO2
She titrated the acid with a NaOH solution whose exact concentration was unknown. A volume of 18.19 mL of NaOH solution was required to reach the endpoint of the titration. What was the concentration of the NaOH solution in units of M (mol/L)
Oxygen makes up 46.7 % by mass of the Earth's crust. How many grams of oxygen are present if a sample of the Earth's crust has a mass of 335 g
What structural similarities exist between indigo, tyrian purple, alizarin, picric acid, and the main component of mauveine? The compounds beta-carotene and crocetin are not listed as part of this group
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