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Why is the sky blue? Could someone please explain this to me
Explain a compound has a molar mass of 598 g/mol. Define if 35.8 mg of the compound is dissolved in adequate water to make 175mL of solution at 25 0C, define what is the osmotic pressure of the resulting solution
An inert gas occupies volume of 366 ml at temperature 41 oC and pressure 354 Torr. What volume does the gas occupy at standard ambient temperature and pressure (SATP)?
A non-SI unit of mass used in pharmaceutical work is the grain (gr). (15 gr =1.0g) An aspirin tablet contains 5.0 gr of aspirin. A 155-lb arthritic individual takes two aspirins tablets per day. What is the quantity of aspirin in two tablets, expre..
Suppose that a 4.0 L sample of gas at 1.0 atm is heated from 44°C to 53°C, during this process the volume doubles. What will the final pressure of the gas sample be
Calculate deltaG for this reaction at 298K in kJ. What can be said about the spontaneity of the reaction at 298K? (1) spontaneous in the reverse direction
a hydrocarbon with an empirical formula CH2 has a density of 1.88 grams per liter at 0 degress C and 1 atm. What is a possible formula for the hydrocarbon?
To find the of X-281, you prepare a 0.086 test solution of X-281. The pH of the solution is determined to be 2.70. What is the of X-281
Make a list of the operations you will need to perform in order to display a spectrum of a food dye on the spectrophotometer
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00. The Ka of HCN = 5.0 x 10-10.
Depict the structural formula for compounds 1 to 5. A certain alcohol C4H10O (1) gives a (+) reaction with chromic acid (2), the alcohol (1) produces a white precipitate (3) within a few minutes of the addition of ZnCl2/HCl.
How many grams of sodium formate, NaCO2H are needed to prepare 100 ml of a formic acid, sodium formate buffer
determinenbsp the pressure in atm inside the can if a metal can of 1.00 qt contains 0.150 grams of helium at a
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