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List the chemical shift, splitting pattern and j value for each proton of 4-methylumbelliferone.
Calculate the concentrations of Ag+(aq) and Ni2+(aq) once the cell is “dead.” Intial concentration for both...
You are asked to prepare 1.2 l of a 0.05 M tris buffer at pH= 7.8....
carbon monoxide is to be burned with air at atmospheric pressure to produce a gad containing...
Why does basicity increase up a column while nucleophilicty decreases down a column? Electron density increases...
For elimination experiment, Calculate the molar ratio of base to 2-boromo-2-methylbutane to be used in the...
2. Show that a 2.00 g sample of PbCl2 will dissolve in 25.0 mL of 1.00...
Part A What mass of Cu(s) is electroplated by running 18.0 A of current through a...
colbalt chloride hexahyrate has a formula weight of 237.9g/mol. How much would you use to make...
Calculate the pH of the solution that results from each of the following mixtures. 1) 55.0...
Classify the following reactions as being either global or elementary. For those identified as elementary, further...
Phase changes always associate with change of enthalpy. For the following situations, name the phase transition...
How do you tell the preferred structure of SO4(2-) based on the formal charges? I know...
3) A solution of ethyl acetate contains the following three organic acids: phenol (pKa = 10.0),...
2. Metformin is a drug that decreases the expression of phosphoenolpyruvate carboxykinase. Explain why metformin would...
A Beer’s Law calibration curve was for created for an Aspirin (ASA) sample yielding the following...
A hospital pharmacist prepared thirty 100mL epidural bags containing 0.125% of bupivacaine HCL and 1mcg/mL of...
A student states that sulfates are bad for our planet because they warm the planet. Now...
Gold crystallises in a face-centred cubic lattice. How many unit cells are there in a gold...
In one sentence, state the difference between past climate change and present climate change, providing both...
True or False? e. Benzoic acid is more reactive than benzene toward electrophilic aromatic substitution f....
Balance the following redox reaction if it occurs in basic solution. What are the coefficients in...
1. Calculate the value of Ksp in the following table: Temperature (0C) Vol (mL) Molarity of...
Consider the basic postulates of kinetic molecular theory given below. A. The size of a gas...
A scientist measures the standard enthalpy change for the following reaction to be -340.2 kJ :...
Please show your work. Find the pH during the titration of 20.00 ml of0.1000 M butanoic...
A buffer composed of 0.50 mol acetic acid (HC2H3O2) and 0.50 mol sodium acetate (Na+C2H3O2-) is...
To make an isotonic solution for an IV, the molarity of NaCl in the IV must...
Draw and label a box diagram of a spectrophotometer that could use for a UV/Vis absorption...
the pH at the equivlence point for the titration of a weak base versus a strong...
What does Nernstian mean with respect to potentiometry electrodes? Specifically the refernece electrode.
Using the appropriate equations, show why fluorescence can be more sensitive than absorption?
A gaseous mixture contains 433.0 Torr of H2(g), 365.5 Torr of N2(g), and 78.1 Torr of...
Can you please show all work and give an explanation. 3) Consider an electrochemical cell based...
Two aqueous hydrogen bromide solutions containing 12.0 wt% HBr (SG = 1.1377) and 30.0 wt% HBr...
Suppose a reaction has a rate constant of 0.720 1/h at 30.0 C. This reaction also...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 65 ∘C , where [Fe2+]= 3.40 M and [Mg2+]= 0.110 M...
In each case, show how you would synthesize the chloride, bromide, and iodide from the corresponding...
Rate constants for the reaction NO2(g)+CO(g)→NO(g)+CO2(g) are 1.3M−1s−1 at 700 K and 23.0M−1s−1 at 800 K....
List all the intermolecular forces for each molecule. Predict the order of increasing vapor pressure at...
2H2 (g) + O2 (g) = 2H2O (g) What is the limiting reagent in each of...
Write a balanced net ionic equation to show why the solubility of Ca(OH)2(s) increases in the...
How many strong IR and Raman spectral lines would H2O show? Show how you solved the...
13.0 moles of gas are in a 7.00L tank at 25.0?C . Calculate the difference in...
a 2.50 gram sample of an unknown silver salt (possibly AgClO3, AgClO4, AgNO3, or AgF) is...
Discuss the consequences of using HCl, NaCl, or CO2 to break the suspension. Can we re-use...
A 20.0-mL sample of 0.150 MKOH is titrated with 0.125 MHClO4 solution. Calculate the pHafter the...
A titration involves adding a reactant of known quantity to a solution of an another reactant...
In this reaction: I2 + 2S2O32- --> S4O62- + 2I- Please explain why the immediate color...
The pressure dependence of the replacement of chlorobenzene (PhCl) by piperidine in the complex [W(CO)4(PPh)] has...
An 50.04 g sample of aluminum is placed on a 25.84 g sample of copper initially...
If the average molecular weight of a molecule of nylon 6/6 (used to make nylon fibers)...
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As...
You are asked to create 1L of a buffer solution that has a total of 1M...
given solvolysis (ionization) of 5-chloro-4-ethyl-1,3-cycloheptadiene and 6-chloro-4-ethyl-1,4-cycloheptadiene A. draw the important resonance forms for the intermediates...
From their positions in the periodic table, arrange the atoms in each of the following series...
Mainly a Chemical Engineering Q A liquid phase reaction: A+B→C the reaction is first order with...
One way to measure ionization energies is ultraviolet photoelectron spectroscopy (UPS, or just PES), a technique...
Explain each of them briefly? 1) bond enthalpy trends? 2) Anomalies
What mass of sodium sulfite must be dissolved in 250mL of solution to result in a...
If the Kb of a weak base is 2.4 × 10-6, what is the pH of...
Describe two methods by which protein enzymes accelerate reactions.
3. The rate of the reaction: 2CO(g) → CO2(g) + C(s) Was studied by injecting CO(g)...
Derive Clapeyron equation and Clausius modification for liquid-vapor equilibrium conditions.
a)Quantity of iron in tablet according to label....? b)Mass of the iron tablet....0.009866g c)Concentration of your...
Copper can be electroplated at the cathode of an electrolysis cell by the half-reaction. Cu2+(aq)+2e??Cu(s) How...
Which of the following is the strongest oxidizing agent? Fe3+(aq) ClO2(g) I2(s) H2O2(aq) Fe(s)
Will the following increase, decrease, or have no effect on the equilibrium vapor pressure of a...
Consider the following reaction: S (s) + 3 O2 (g) → 2 SO3 (g) What volume...
Calculate the planar densities in ions per square nanometer on the (111) and (110) planes for...
Na2SO4 or K2SO4 1. You may want to experiment by adding a drop of pH indicator...
Draw the mechanism of the reaction, using bromine (Br2) as your brominating agent rather than pyridinium...
29 g of copper pellets are removed from a 300∘C oven and immediately dropped into 90...
The rate of heat addition to an air-standard Brayton cycle is 3.4 times 109 Btu/h. The...
You work in a small-scale manufacturing facility that uses phthalic acid as the starting material for...
In Mass spec, Why are there smaller fragments such as 71, 43, 29, 15 for 1-pentanol,...
Calculate how many lactic acid monomers are in a 5g sample of PLA (Polylatic acid). (Hint:...
True or False? a) For an enzyme-catalyzed reaction with competitive inhibition, the maximum rate (Rmax) is...
Consider the combustion of butane, C4H1O: C4H10(g) + 13/2 O2(g) -> 4 CO2 (g) + 5...
Since pure water boils at 100.00 ∘C, and since the addition of solute increases boiling point,...
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