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Context: will be measuring the absorbance of para-nitrophenol in a buffer solution with pH 6.3.Estimate the absorbance (“extinction”) coefficient.  For 100% anion the value is 1.86 x 10^4.  Assume the pKa is 7.  Calculate the value of the coefficient at pH6.3.  (What fraction of the pNP will be the anion at this pH?)

1.     Answer the case study question.  Research to gather any needed information. Assess the reliability or credibility of the source and only use credible sources.2.     Cite all sources used.3.     Write your own opinion based on evidence from your research.eck spelling and grammarCASE STUDYSociety needs energy and nuclear power plants provide some of that energy. What are the pros and cons of nuclear power? […]

The equation below shows the reaction of sodium with water. In an experiment 0.85g of sodium were reacted with a large volume of water. 2Na+2H2O —>  2NaOH + H2Find the number of moles of sodium reacting with water in this experiment. 

How do I know how a change in acetic acid involved in a buffer solution affects the order of the reactant [H+]. I got rate=k[H2O2][I-] and the order for [H=] is 0. However, would this affect the order of H+ if I used a different concentration of acetic acid?

2(a) Aluminium chloride exists in the form of dimer at room temperature. (i) Draw the Lewis structure of aluminium chloride when it is heated to 1000 °C. (2 marks) (ii) Mr Andrew plans to replace the aluminium oxide used in Hall-Héroult process with aluminium chloride. As Mr Andrew’s colleague, state whether you agree with him. Explain your answer. (3 marks) (iii) State your observation when the aqueous […]

Approximately (3.230×10^0) g of lead(II) acetate, Pb(CH3COO)2,is weighed out and placed in a (2.85×10^2) mL solution of 0.150-mol/L sodium hydroxide. Calculate the mass of precipitate produced in this reaction. Note:Your answer is assumed to be reduced to the highest power possible.

draw a curve similar to that shown in figure for a series of solutions of nh3. plot [oh_] on the vertical axis and the total concentration of nh3 (both ionized and nonionized nh3 molecules) on the horizontal axis. let the total concentration of nh3 vary from 1 _10_10 m to 1 _10_2 m.

Consider the following concentration cell.M(s) | M+(satd MX) || M+(0.100 M)| M(s) Ecell = 0.417 VAt the anode, a metal electrode (M) is placed in a saturated aqueous solution containing ions of the same metal (M) and a halogen (X), MX. At the cathode, a second electrode of the same metal (M) is placed in a solution with [M+] = 0.100 M.The two half-cells are […]

Consider the following concentration cell.M(s) | M+(satd MX) || M+(0.100 M)| M(s) Ecell = 0.417 VAt the anode, a metal electrode (M) is placed in a saturated aqueous solution containing ions of the same metal (M) and a halogen (X), MX. At the cathode, a second electrode of the same metal (M) is placed in a solution with [M+] = 0.100 M.The two half-cells are […]

An electrolytic cell containing one half-cell consisting of a nickel electrode in a 1 mol/L nickel (III) chloride solution and the other half-cell consisting of a cadmium electrode in a 1 mol/L cadmium chloride solution is assembled.(a) Sketch the cell and label the anode, the cathode, and the direction of electron flow. Be sure to include a salt bridge and a power supply in your […]

An electrolytic cell containing one half-cell consisting of a nickel electrode in a 1 mol/L nickel (III) chloride solution and the other half-cell consisting of a cadmium electrode in a 1 mol/L cadmium chloride solution is assembled.(a) Sketch the cell and label the anode, the cathode, and the direction of electron flow. Be sure to include a salt bridge and a power supply in your […]

C=5/9(F_32)The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?I) A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of 5/9degree Celsius.II)A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.III)A temperature increase […]

Analyze the assigned neurological disorder and prepare a report in a two- to three-page document. Evaluate the causes of stroke. Discuss the differences between transient ischemic attack and cerebrovaAnalyze the assigned neurological disorder and prepare a report in a two- to three-page document.Evaluate the causes of stroke. Discuss the differences between transient ischemic attack and cerebrovascular accidents (CVA). Discuss the types, warning signals, and treatment […]

Analyze the assigned neurological disorder and prepare a report in a two- to three-page document. Evaluate the causes of stroke. Discuss the differences between transient ischemic attack and cerebrovaAnalyze the assigned neurological disorder and prepare a report in a two- to three-page document.Evaluate the causes of stroke. Discuss the differences between transient ischemic attack and cerebrovascular accidents (CVA). Discuss the types, warning signals, and treatment […]

Consider the following reaction:H2O(g) + CO(g) H2(g) + CO2(g)The equilibrium constant Kp for this reaction is 0.55 at 1023 K.In a reaction vessel, water vapour and carbon monoxide are introduced at a pressure of 3.50 atm, and allowed to reach equilibrium at 1023 K.Construct a table and use it to calculate the partial pressure of all the gases at equilibrium.

If 15.0 g of H2 reacts with excess N2 according to the following equation what would the pressure of NH3 made be if it were trapped in 2.00 L at 35.0oC:N2 (g) + 3H2 (g) — 2NH3 (g) (GS not EQ thus stoich first and then PV=nRT and the value ofR=0.0821 L*atm/mol*K and 0oC = 273K)