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Draw the structure of predominant form of Nexium at pH 1.5,7.0,12.0 with three resonance structures at pH 12.
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What would an increase in the metal wire mass indicate when the metal wire starts to form copper on it from a chemical reaction from 6M HCl and copper (II) sulfate pentahydrate? What would a decrease in the metal wire ma ...
The combustion of naphthalene (C 10 H 8 ), which releases 5150.1 kJ/mol, is often used to calibrate calorimeters. A 1.05 - g sample of naphthalene is burned in a calorimeter, producting a temperature rise of 3.86 degrees ...
A chemist must dilute 37.4 mL of 8.08 μM aqueous mercury(I) chloride (Hg2Cl2) solution until the concentration falls to 2.00 μM. He'll do this by adding distilled water to the solution until it reaches a certain final vo ...
An analysis of an oxide of nitrogen with a molecular weight of92.02 amu gave 69.57% oxygen and 30.43 % nitrogen. What is the empirical formula of the compound?
When 3.56 g of an unknown hydrocarbon was dissolved in 125 g of benzene, the freezing pointof the solution was found to be 4.41oC. Analysis of thehydrocarbon showed that it contained 93.71% carbon (by mass) and6.29% hydr ...
How well does Tiger Brand's vision and mission statement help narrow down feasible alternative strategies available for the firm?
A mixture consisting of powdered granite and sugar. Water is added and the mixture is stirred then filtered. What is presented on the filter paper? What is present in the filtrate(the liquid obtained in the filtration)? ...
What are the symbol and name of the element whose average atoms have a mass very nearly half the mass of an average silicon atom?
Interpretation of Reactions by Ionic Type Equations. Aqueous solutions of the following substances or their mixtures with water if they are only slightly soluble, are mixed. Write first the conventional equation , secon ...
Consider reacting 100.00 mg magnesium with 20 mL of 1 M hydrochloric acid. Which reactant is limiting reagent? What is theoretical yield of hydrogen? express your answer in millimoles.
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