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A solution is prepared by mixing 80.0 mL of alcohol with enough water to give 200.0 mL solution. Calculate the % v/v concentration of alcohol in the solution. *4.0% v/v *16.0% v/v *28.5% v/v *40.0% v/v
How many moles of oxygen are needed for the complete combustion of 9.88* 10^21 molecules of hexane?
What principle explains the solubility of a substance in aqueous acid or aqueous base
explain why covalent bonds are formed when non metals from the right side of the periodic table bond with each other. Give two examples of such compounds.
What is the animals inital radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
show step necessary to make this ether (2-methyl propoxycyclohexane) by williamson ether synthesis starting with neutral compounds, not ions.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400. g of water.
Why is benzoic acid extracted into the aqueous phase when using sodium bicarbonate, whereas 2-naphthol required the use of sodium hydroxide
If a 210 mg piece of gold (density =19.32 g/cm^3 ) is hammered into a sheet measuring 2.5 x 1.0 ft , what is the average thickness of the sheet in meters?
Suppose that N2 gas may be described as van der waals gas. This gas (n=1.25 mol) is expanded isothermally and reversibly from a volume of 1 liter to 10 liters at 300K
Calculate the concentration of all the species, ions, and molecules, and the pH of the following solutions. All solutions have a total volume of 1.00 liter and contain
Suppose a reversible heat pump transfers heat from the outdoors at 0 degrees C to a room at 20 degrees Celsius. For each Joule of work input to the heat pump, how much heat will be deposited in the room?
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