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What volume of a 5.00 M KCl solution is required to prepare 675 mL of a 0.230 M KCl solution?
1.5 mol of oxygen are mixed with an unknown amount of nitrogen in a 2.0L container at a temperature of 26.0 degrees C. If the final pressure of the mixture is 4.3atm, what is the number of moles of nitrogen in the container
when zinc metal is placed into a copper (II) nitrate solution, a single-displacement reaction occurs. Write a balanced equation to describe this reaction.
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation). a. pH = 8.7 for 0.010 M RNH2 (weak base)
Calculate the pH and pOH of a solution that has an OH- concentration of 3.1 x 10-2M. Calculate the pH and pOH of a solution that has H3O+ concentration of 1.3 x10-6M
If 21.3 mL of a 0.120M NaOH solution are required to neutralize 0.400 grams of an unknown monoprotic acid, what is the molecular mass of the acid
The specific heat of water increases at a constant rate. The specific heats of NaOH, HCl, and the product of the reaction are the same as that of water.
The radius of a uranium atom is 149 pm. How many uranium atoms would have to be laid side by side to span a distance of 4.55 mm?
explain how and why carbon can experience sp sp2 and sp3nbspvia hybridization and what role this plays in the geometry
Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished. what would be the new equilibrium total pressure.
A chemist measures the amount of hydrogen gas produced during an experiment. He finds that 49.4 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced.
What is the percent by mass of aluminum chloride (AlCl3) prepared by dissolving 26.8g in 355.0ml of water? assume density of water is 1.00g/ml
The highly exothermic thermite reaction in which aluminum reduces iron (III) oxide to elemental iron, has been used by railroad repair crews to weld rails together. Explain What mass of iron is formed when 725 KJ of heat are released
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