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Find the number of moles of the indicated species in (a) 6.84 g of B2O3 (b) 296 mg of Na2B4O7 10 H20 (c) 8.75 g of Mn3O4 (d) 67.4 mg of CaC2O4
Write a chemical equation for LiOH(aq) showing how it is an acid or a base according to the Arrhenius definition.
the permangenate ion and determine the standard reduction potential for the reaction.
Use a molar mass of 800g/mol for the vegetable oil and use a density of 0.88g/mL for vegetable oil and 0.79 g/mL for methanol to calculate how many moles of ethanol are used.
A mixture consisting of 30ml of waste and 270ml of seeded dilution water has an initial DO of 8.55mg/l; after 5 day, it has a final DO of 2.40 mg/l. Another bottle containing just the seeded dilution water has an initial DO of 8.75 mg/l
With Niemann-Pick Disease, discuss how lipid metabolism is affected, particularly which enzyme(s), and how the body is affected
What is the empirical formula of ascorbic acid, given that the pseudoformula is C3.41 H4.53 O3.41
A semiconductor of n-type is know to have an electron concentration of 3 x 1018 m-3. If the electron drift velocity is 100 m/s in an electric field of 500 V/m
Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion.
Technetium-99 is a long-live radioactive isotope of technetium. Each nucleus decays by emitting one beta particle. What is the product nucleus?
A buffer solution was prepared by adding 4.95 g of sodium acetate, NaCH3CO2, to 2.50 x 10^2 mL of 0.150 M acetic acid, CH3CO2H. What is the pH of the buffer?
The reaction is first order and has a rate constant of 6.2 ? 10-5 /s at 35?C when the H+ concentration is 0.10 M. Suppose that the initial concentration of sucrose in the solution is 0.40 M. How many minutes will it take for the sucrose concentrat..
Please draw a detailed arrow-pushing mechanism for the addition of HBr to trans-2-butene. Also draw a potential energy diagram for this reaction.
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