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The density of an aqueous solution containing 15.0 percent ethanol (C2H5OH) by mass is 0.973 g/mL.
(a) Calculate the molality of this solution.
(b) Calculate the solution's molarity.
(c) What volume of the solution would contain 0.153 mole of ethanol?
the smell of ripe raspberries is due to4-p-hydroxyphenyl-2-butanone which has the empirical formulac5h6o. to find its
Define An enzyme was assayed at an initial substrate concentration of 2x10^-5 M. In six minutes half of the substrate had been consumed. The km for the substrate is 5x10^-5M. Compute the turnover number (k)
If the core electrons were totally effective at screening the valence electrons and the valence electrons provided no screening for each other, what would be the effective nuclear charge acting on the 3s and 3p valence electrons in P?
What is a possible formula
The freezing point of t-butanol is 25.50C and Kf is 9.1C kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 10.0g sample of t-butanol is 24.59C. How many grams of water are present in the sample?
A hydrogen molecule in it's ground vibrational state with KE=10eV collides with heavy atom metal surface and no energy is transferred to the surface, i.e., the surface can be modeled as an infinite potential wall.
Explain why do we need potassium carbonate before distillation? I did an ethanol from sucrose lab as well as the TA had to put potassium carbonate in the mixture before we utilized fractional distillation to separate the 3 liquids
An automobile gasoline tank holds 21kg of gasoline. When the gasoline burns, 86kg of oxygen is consumed and carbon dioxide and water are produced.
A biochemical engineer isolates a bacterial gene fragment and dissolves a 14.7 mg sample of the material in enough water to make 36.5 mL of solution. The osmotic pressure of the solution is 0.340 torr at 25°C.
Problem- An element crystallizes in a face-centered cubic lattice. What would be the length of the edge and density of the unit cell of hydrogen.
Explain Cyclopentadiene reacts as a diene in the the Diels-Alder reaction a great deal faster than does 1,3 butadiene.
Explain how you would prepare 250.0mL of 0.2250 M calcium chloride using a 4.000 M stock solution of calcium chloride. Define what are the concentrations of calcium cautions and chloride anions in the diluted solution
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