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Preparing a standard sodium hydroxide solution. Compute the volume of 50% NaOH solution to prepare 500mL of ~0.1 M NaOH solution.
Explain how do calculate this problem and what do they mean by 50%?
The enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kJ/mol of water produced. How much energy will be released when 155.0 mL of 0.400 M HCl is mixed with 157.0 mL of 0.500 M NaOH
Antacid #1 has 1700 mg of sodium bicarbonate, antacid #2 has 500 mg of calcium carbonate. Which tablet is capable of reducing the most acid and why
A solid laboratory unknown contains two substances, lead(II) carbonate and potassium carbonate. A 5.000 g sample of this unknown was treated with aqueous nitric acid to dissolve it, then, after further treatment to adjust the acidity, it was treat..
While coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), Explain which is responsible for the acid rain phenomenon.
a 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 jdegc.
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
A person accidentally swallows a drop of liquid oxygen, O2(l), which has a density of 1.149 g/mL. Assuming the drop has a volume of 0.035 mL, what volume of gas will be produced in the person's stomach at body temperature (37°C) and a pressure of ..
what is the maximum mass of an object traveling at 549 m·s-1 for which the de Broglie wavelength is observable?
To find the pKa of X-281, you prepare a 0.087M test solution of X-281. The pH of the solution is determined to be 2.40. What is the pKa of X-281?
Sometimes when you blow up a balloon and release it, it flies around the room. what is happening to the air that was in the balloon and its volume
i) Compute the number of atoms in the subsequent unit cells a.) body-centered cubic structure b.) Hexagonal structure. ii.) Compute the packing efficiency of each above unit cell.
What information do molecular formulas, condensed structural formulas, Lewis structures and bond line formulas provide
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