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An alum is a "double salt" consisting of a monovalent cation, a trivalent cation, and two sulfate ions with twelve water of hydration (waters of crystallization) as part of the crystallin structure. Are the twelve water of hydration used to calculate the theoretical yield of the alum? Explain.
Identify the qual 1 cation that is confrimed present in a reference solution by the formation of a precipitate? by the color of a soluble complex ion?
cortisone is a steroid used to treat joint inflammation. each cortisone molecule contains 21 atoms of carbon plus
Which equation represents a reaction that provides the heat of formation of Fe3O4?
The decomposition of carbon disulfide, CS2 to form carbon monosulfide, CS and sulfur is first order with k = 2.8 x 10^-7 / second at 1000 degrees C. CS2 => CS + S determine how many days would be needed before a 1.00 gram sample of CS2 had decompo..
A sample of an unknown biochemical compound is found to have a percent composition of 71.63 percent carbon, 5.51 percent hydrogen, 6.96 percent nitrogen and the balance oxygen. What is the simplest formula for this compound
Approximate the percent increase in waist size when a 155 lbs person gains 40 lbs of fat. Assume the volume of a person can be modeled by a cylinder that is 4 ft tall. The average denisty of a human is 1g/cm3 and the average density of fat is .918..
Calculate the experimental percent by mass of copper in the sample and the theoretical mass percent of copper in copper (II) acetate monohydrate.
An element occurs as a mixture of isotopes. The atomic mass of the element is based upon
What is the % by mass of CaCl2.2H2O in the salt mixture B. how many grams of the excess reactant K2C2O4.H2O reacted in the mixture C. How many grams of the K2C2O4. H2O in the salt mixture remain unreacted
an element has three naturally occurring isotopes with the following masses and abundances in parenthesis 27.977 amu
What tripeptide would be synthesized from the informational strand of DNA with the sequence 5' GTATCCAGT?
The molecular weight of [Cu(NH3)x]SO4*H2O when x=1 is equal to 194.68 g/mol. the molecular weight of CuSO4 * 5H2O is equal to 249.72 g/mol.
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