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Imagine a unit of charge called the zorg. A chemist performs the oil drop experiment and measures the charge of each drop in zorgs.
A -3.9×10-9
B -7.8×10-9
C -5.2×10-9
D -1.04×10-8
The heat of fusion of water is 334 J/g, and the specific heat of water is 4.18 j/g degrees C. How many joules of heat are released when 20.0 g of water at 30.degrees C is cooled to 0.0 degrees C and frozen to ice at 0.0 degrees C.
aliquot of the HCl solution required 13.98 mL of 0.08485 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.08 mL. Balance the reaction below and determine the percent WO3 in the ceramic sample.
a buffer solution is prepred by adding 15.00g of sodium acetate (NaC2H3O2) and 12.50g of acetic acid to enough water to make 500mL (three significant figures) of solution.
the anesthetic procaine hydrochloride is often used to deaden pain during dental surgery. the compound is packaged as a 10.% solution (by mass; d= 1.0 g/mL) in water. IF your dentist injects 0.50 mL of the solution, what mass of procaine hydrochlo..
how many liters of 0.25 M NaOH would I have to add to a acidic solution of pH 3.365 to make a solution of pH 7?Acidic solution is 50mL.
What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?
A 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the excess acid in the solution required 2.34 mL of 0.01063 M NaOH when t..
how many grams of gold would plate on the metal used for the medallion? Explain what you are thinking as you show your calculations.
How will you prepare the following solutions from 6.0 M solution of acetic acid? Give exact details. Assume that a 10-mL graduated cylinder (in which volumes can be read to the nearest 0.1 mL) and a 100-mL graduated cylinder are available.
When blood is donated, sodium oxalate solution is used to precipitate Ca2+, which triggers clotting. A 104 mL sample of blood contains 9.7 x 10^-5 g Ca2+/mL. A technologist treats the sample with 100 ml of .1550 M Na2C2O4. Calculate [Ca2+] after t..
the mass ratio of sodium to fluorine in sodium fluoride is 1.211. a sample of sodium fluoride produced 36.5 rm g of
What is the pH of a mixture of 100.0 ml of 0.01M NaH2PO4 and 100.0 ml of 0.01 M Na2HPO4.
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