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When copper is heated with an excess of sulfur, copper(I) sulfide is formed.
In a given experiment, 1.89 g of copper was heated with excess sulfur to yield 1.76 g of copper(I) sulfide.
What is the percent yield?
what is the experimental value of Avogadro's number. dropper pipet calibration= 68 drops/ml number of drops of oleic acid in the monolayer=16 drops diameter of monolayer = 15.0 cm
The molar mass of a protein is determined from a measurement of the osmotic pressure. If 0.01 grams of the protein is dissolved in 1 ml. and osmotic pressure of 5 x 10-3 atm develops at a temperature of 310 K, what is the molar mass of the protein..
The effective nuclear charge, Zeff, for a valence electron can be approximated using the "core charge" of the atom, that is, the total charge of the nucleus and the inner (non-valence) electrons.
the characteristic odor of pineapple is due to ethyl butyrate a compound containing carbon hydrogen and oxygen.
Describe possible sources of error in experiment - Create a Beers law plot and best fit line - determine the concentrations for samples
By reference to recent literature, explain the discovery of any new decay modes not mentioned in Radiochemistry as well as Nuclear Methods of study by Ehmann/Vance.
A package of aluminum foil contains 100. square feet and weighs 1.2 lbs. One cubic centimeter of aluminum has a mass of 2.70 grams. what is the thickness of the foil in millimeter
Metabolic reactions are regulated by a variety of regulatory mechanisms. Mention and discuss five mechanisms. Give clear examples of each.
Draw the three dimensional shape of the molecules and write the complete structural formulas and condensed structural formula for all isomers if any. Be sure to name all compounds.
A galvanic cell Zn / Zn2+ // Cu2+ / Cu generates a current of 4.00 Amperes for 1.00 hour. The cathode increases in mass by 10.0g . If charge on an electron is 1.602 x 10-19 coulombs/ electron. Calculate the Avogadro's number using these experimenta..
How many moles of oxygen are in a compressed cylinder that has a volume of 8.00 L at a pressure of 41.0 atm and at 25 degrees celcius?
A mixed alkali sample requiring 15.0ml of 0.100 F HCl to reach the first end point and an additional 20.0ml to reach the second end point
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