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The frequency of vibration in a quartz watch is 33 kHz. What is the energy required to excite this vibration? Also compute omega for this vibration.
Explain The Chemistry of Food Composition, find the nutritional values/info in food from USDA Nutrient Data Laboratory?
What is the rate constant for the reverse reaction at the same temperature?
To determine the empirical formula of ester, 1.02g of the ester was burnt completely in excess oxygen. The only products formed were 2.20g of carbon dioxide and .90g water vapor. Calculate the mass of oxygen in 1.02g of the compound.
A solution is prepared by dissolving 179 g sucrose (C12H22O11) in enough water to produce 1.15 L solution. What is the molarity of this solution?
Consider the reaction, 2 Al(s) + 3 Cl2(g) => 2 AlCl3(g). How many grams of AlCl3 will be made by the reaction of 7 moles of Al(s) with 27 moles of Cl2(g)
what is the constant k for this reaction. what is the rate of the reaction if the initial concentrations of [A] = .400M, [B]= .0500M and [C]= .075M
The "colbalt treatments" used in medicine for arresting certain types of cancer rely upon the ability of gamma rays to destroy canercous tissues. Cobalt-60 decays with the emission of Beta particles and gamma rays, with a half life of 5.27 years. ..
Lead nitrate, Pb(NO3)2, reacts with sodium sulfate, Na2SO4, to make lead sulfate, PbSO4, and sodium nitrate, NaNO3. How much lead sulfate can one make from 65.05 g lead nitrate and 55.02 g sodium sulfate? Explain fully how you came to you answer. I..
A nonelectrolyte solution adsorbs on an electrically neutral solid through a liquid. Two surfaces of this type are brought close to one another in the liquid such that they interact.
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
Draw the possible side products that may occur in the bromination of trans stilbene by pyrdinium perbromide
describe how these limestone objects are corroded by the sulfuric acid in polluted air, what chemical reaction is involved here?
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