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The isolation of magnesium from seawater can be summarized by the following three reactions.MgCl2(aq)+Ca(OH)2(aq)⟶Mg(OH)2(s)+CaCl2(aq)Mg(OH)2(s)+2HCl(aq)⟶MgCl2(aq)+2H2O(l)MgCl2(l)⟶Mg(l)+Cl2(g)What is the point of the first two reactions, given that they start and end with MgCl2(aq)? Select the correct answer below: The calcium chloride (CaCl2(aq)) produced in the first reaction is a necessary product of the Pidgeon process that is used to purify the final elemental magnesium. The removal of calcium hydroxide (Ca(OH)2(aq)) from the seawater by formation of calcium chloride (CaCl2(aq))) makes it easier to isolate the aqueous magnesium chloride (MgCl2(aq)) from the seawater. The first two reactions separate the MgCl2(aq) from other solutes in the seawater. The heat evolved in the first two reactions is used to melt the isolated magnesium chloride so it can be electrolyzed.

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Question 22 (1 point) ✔ Saved If the central atom in a particular Lewis structure has one triple bond and one lone pair of electrons around it, it would require $sp^3$ hybridization. True False

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Common Data Question: The closed loop amplifier has a single pole roll off with a bandwidth of 10 kHz $V_{REF} = 1V$ 8) If $V_{REF}$ has 10 mV of noise at 1 kHz, the noise at $V_{out}$ will be ____ mV. 9) If $V_{REF}$ has 10 mV of noise at 100 kHz, the noise at $V_{out}$ will be ____ mV.

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In the tcp/ip network model, data from the end users utilities (the message) is passed down to the ___ layer for processing

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2. Write a question, including a sketch, that calculates the magnetic field strength at which a force of Y newtons would be produced if an object with 0.00025 coulomb of charge on it were traveling through the field at a reasonable velocity of your choosing. Then answer it.

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30. Tom and Linda are married taxpayers who file a joint return. They have itemized deductions of $27,800 and four exemptions. Assuming an adjusted gross income of $40,000, what is their taxable income for 2020? 31. Compute Marie's taxable income for 2020, assuming she is single and claims two dependent children. Her adjusted gross income is $70,000, and she has itemized deductions of $19,650. 32. Which of the following taxpayers should itemize? Explain. a. Robert is a single taxpayer. He has itemized deductions of $12,600. b. Jane qualifies as head of household. Her itemized deductions total $17,850. c. Brian is married and files a separate return. He has itemized deductions of $12,600. d. Lisa is a surviving spouse. Her itemized deductions are $24,500.

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SCHEMATIC: Engine oil $\dot{m}$ = 0.02 kg/s $T_s = 100^\circ C$ Tube, $D = 3 mm$ $L = 30 m$ $A_s = \pi DL$ $T_{m,i} = 60^\circ C$ $T_{m,o}$

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On Jeopardy, you get 15 points for each correct answer and you lose 20 points for each incorrect answer. Jeremy the Trivia Whiz answered 8 questions correctly and 4 questions incorrectly. What was his score?

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If the motor in the previous question has an internal cold temperature of 230Â°C and a cold resistance of 3.2Î©, what will the hot resistance be after running several hours? (Rounding may cause a difference) Sx = Sn (Rx/Rn) 5.72Î© Sx and Sn found in the previous problem 6.5Î© Rn is cold resistance. 8Î© 4Î©

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An indoor track is made up of a rectangular region with two semi-circles at the ends. The distance around the track is 400 meters. Entire length of track is 400 meters Important formulas: Area of rectangle is $xy$ Area of Circle is $\pi r^2$ Circumference of circle is $2\pi r$ What dimensions for the rectangular region maximize the area of the rectangular region? Do not attempt to maximize the area of the whole figure!! Explain in words how you arrived at your answer.

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