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if there are 45 drops of alcohol/mL, and the density of alcohol is 0.789g/mL. what is the blood alcohol concentration?
A mixture of NaCl and NaBr has a mass of 2.08g and is found to contain 0.78 of Na.What is the Mass of NaBr in the mixture.
strong/weak and concentrated/dilute. Provide an appropriate example using each of these terms to describe a solution
how efficient is the extraction of tea leaves containing 1.0g of caffeine with two 30mL portions of chloroform over that of a single-step extraction? KD= 8.36 at 25 C)
In a gas mixture, the partial pressures are argon 455 , neon 85 , and nitrogen 135 .What is the total pressure exerted by the gas mixture?
The Ksp value for the dissociation of barium nitrate is 0.00464. The molar solubility of barium nitrate is consequently 0.105 M. If the concentration of the barium ion in a saturated solution of barium nitrate was raised to 0.178 M (this is not th..
If you fill the larger tank with oxygen to a pressure of 115 , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Calculate the volume of C2H2 that is collected over water at 23 Celcius by reaction of 0.751 g of CaC2 if the total pressure of the gas is 740 torr. (The vapor pressure of water is 21.07 torr .)
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
Why do we measure the volume of the flask with water rather than using the volume listed on the side?
Your metropolitan area has been warned by the EPA to lower sulfur dioxide and nitrogen oxide emissions or it will lose substantial federal funding. One citizen's group calls for conservation as a means of drastically reducing electricity consumption.
In the experiment aniline and acetic anhydride are reacted to form acetanilide, how do you calculate the theoretical yield of acetanilide?
Calculate the molarity of a solution made by dissolving 0.650 Na2SO4 grams of in enough water to form exactly 950 mL of solution.
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