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Recently answered Chemistry Assignment Problems.

The absorption spectrum of the compound shown below, 1-phenyl-2-N,Ndimethylamino- ethane (P2NM) resembles between 250 and 270 nm (S0 → S1-transition) the absorption spectrum of toluene or ethylbenzene. At 77 K in an isopentane glass the emission spectrum and the fluorescence decay time are identical with those of toluene (emission maximum at 285 nm or 35100

The absorption spectrum of the compound shown below,
1-phenyl-2-N,Ndimethylamino-
ethane (P2NM) resembles between 250 and 270 nm (S0 →
S1-transition)
the absorption spectrum of toluene or ethylbenzene. At 77 K in an
isopentane glass the
emission spectrum and the fluorescence decay time are identical
with those of toluene
(emission maximum at 285 nm or 35100

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custom answer A 36 year old German male comes to you, hisPA, after experiencing a mild fever, dry coughwhich is painful but nonproductive of sputum(mucus), a headache which he feels on bothsides, and mild joint pains. He states that hissymptoms began this morning and came outof nowhere.He mentions that about 7 days ago, heattended a

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Assuming that you have available the required aldehydes, ketones, and nitroalkanes, show how you would synthesize each of the following compounds and write a detailed mechanism for each reaction. (a) (b) ( mathrm{HOCH}_{2} mathrm{CH}_{2} mathrm{NO}_{2} )

Assuming that you have available the required aldehydes, ketones, and nitroalkanes, show how you would synthesize each of the following compounds and write a detailed mechanism for each reaction. (a) (b) ( mathrm{HOCH}_{2} mathrm{CH}_{2} mathrm{NO}_{2} )

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custom answer use the info on top find mol of Hg, No3, and Na for bottom question If a solution containing 39.94 g of mercury(II) nitrate is allowed to react completely with a solution containing 13.180 g of sodium dichromate, how many grams of solid precipitate will be formed? 20.958 How many grams of the reactant in

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(15 pts.) Calculate the standard reduction potential ( left(E^{circ}right) ) for the half-reaction [ mathrm{H}_{2} mathrm{PO}_{4}^{-}+mathrm{H}^{+}+2 e^{-} rightleftharpoons mathrm{HPO}_{3}^{2-}+mathrm{H}_{2} mathrm{O} ] given the three acid dissociation constants for ( H_{3} mathrm{PO}_{4} ; p K_{1}=2.148, p K_{2}= ) ( 7.199, p K_{3}=12.15

(15 pts.) Calculate the standard reduction potential ( left(E^{circ}right) ) for the half-reaction [ mathrm{H}_{2} mathrm{PO}_{4}^{-}+mathrm{H}^{+}+2 e^{-} rightleftharpoons mathrm{HPO}_{3}^{2-}+mathrm{H}_{2} mathrm{O} ] given the three acid dissociation constants for ( H_{3} mathrm{PO}_{4} ; p K_{1}=2.148, p K_{2}= ) ( 7.199, p K_{3}=12.15

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custom answer Help would be Great! Based on the pages 31−32 in the lab manual, the is used to determine the accuracy meanwhile the is used to determine the precision of the measurements. Analysis of Results Experiment 1: Using Pipettors Part A: Precision of P-100 or P-200 1. Record the weight you measured for the

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Learning Activity 6.1. On a graphing paper, your group has to make a Michaelis-Menten graph of the enzyme ( beta )-methylaspartase by plotting [S] (substrate concentration in ( mathrm{mol} / mathrm{L} ) ) and ( mathrm{V} ) (reaction velocity) using the data below. You have to identify the parts of the graph where one can obtain the Vmax (maximum

Learning Activity 6.1. On a graphing paper, your group has to make a Michaelis-Menten graph of the enzyme ( beta )-methylaspartase by plotting [S] (substrate concentration in ( mathrm{mol} / mathrm{L} ) ) and ( mathrm{V} ) (reaction velocity) using the data below. You have to identify the parts of the graph where one can obtain the Vmax (maximum

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Most popular Chemistry Tags on OnlineClassHandlers

custom answer show all workings plsexcel sheet attached 3. A university wants to know what proportion of students are regular bike riders so that they can install an appropriate number of bike racks. The spreadsheet bike. csv contains the result of survey conducted in 20 classes. Here N is a class size and n is

custom answer write a brief overview of a proposed theory. The proposal is on how management affects students performance in UGBS Online Class Handlers: Advanced Math, Advanced Math questions and answers, homework help, Math

custom answer please Help me Instructions: Below are some typical answers students have submitted in the past. Describe the mistake(s) in your own words. What grade (percentage) would you give a student making this mistake? In deciding the grade, consider the following: how ‘big’ is the mistake, how does the mistake compare to the others

An economist wants to determine whether average price/earnings (P/E) ratios differ for firms in three industries. Independent samples of five firms in each industry produced the following results after conducting a one-way ANOVA. SSB (sum of squares between groups) = 258.82 and SST (sum of squares total) = 424.04. Based on this information, what would be the

An economist wants to determine whether average price/earnings
(P/E) ratios differ for firms in three industries. Independent
samples of five firms in each industry produced the following
results after conducting a one-way ANOVA. SSB (sum of squares
between groups) = 258.82 and SST (sum of squares total) = 424.04.
Based on this information, what would be the

A financial security generates a cash flow of $25,000 every five years forever with the first cash flow occurring in 3 years’ time. The appropriate opportunity cost is 12% p.a. compounded annually. What should be the security’s price today?

A financial security generates a cash flow of $25,000 every five
years forever with the first cash flow occurring in 3 years’ time.
The appropriate opportunity cost is 12% p.a. compounded annually.
What should be the security’s price today?