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)

Put the title of your article, the date of the article ( remember it has to be dated 2021) ,direct link to your article, and the source of the article in the comment section below. Any comments without all of the information will be deleted.YOU HAVE TO RESEACH A TOPIC RELATE TO SCIENCE

If 33.8 moles of hydrogen gas has a final volume of 3.46 L, then what is the initial volume of 5.22 moles of hydrogen gas? Assume constant pressure and temperature. Round your answer to three significant figures.

Discuss the coherent interaction between atoms and light using the Bloch vector formalism. Give an example for the experiment which can be described using the Bloch vector.—–I’d also like to include pi/2 pulse in this but I am having difficulties understanding what it is and how it works.

Use the information below to fill out the timeline attached. Use your notes and/or research the scientist responsible for the actions below. Insert the action and the scientist name into the boxes for the correct year.* Discovered electrons using the Plum Pudding Model* Discovered neutrons* * Reviewed/Learned about the atomic timeline* Discovered the charge of electrons* Discovered Protons* Created Nuclear Model and discovered nucleus* Came […]

Discuss the coherent interaction between atoms and light using the Bloch vector formalism. Give an example for the experiment which can be described using the Bloch vector.—–I’d also like to include pi/2 pulse in this but I am having difficulties understanding what it is and how it works.

AP Chem AB FRQQuestion 1A sample consisting of 50. mL of 0.400 M solution of the acid, HClO4, is titrated with a 0.200 M solution of the base, LiOH.Write the balanced chemical reaction for neutralization reaction: HClO4 (aq) + LiOH (aq) _ LiClO4 (aq) + H2O (l)Write the NET ionic equation for the neutralization reaction.OH_ (aq) + H_ (aq) _ H2O (l)Compute the pH of […]

1. From 1 L of household bleach available, a. How much volume of 1:10 house hold bleach solution will you be able to prepare ? b. How much volume of water is needed? c. It has been mentioned earlier that household bleach is a solution of sodium hypochlorite which generally contains 5% (50 g/liter or 50000 ppm) available chlorine, how many percent of chlorine is […]

1. From 1 L of household bleach available, a. How much volume of 1:10 house hold bleach solution will you be able to prepare ? b. How much volume of water is needed? c. It has been mentioned earlier that household bleach is a solution of sodium hypochlorite which generally contains 5% (50 g/liter or 50000 ppm) available chlorine, how many percent of chlorine is […]