Numerade

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For organic chemistry, it is best to think of electrons as waves. According to the valence bond approach, the atomic orbitals on each atom are combined first to create hybridized orbitals. These orbitals can then overlap with orbitals on adjacent atoms to create sigma bonds. Three (or more) atom "extended pi-bonds" are the situation resonance structures are usually trying to describe. For pi bonding and therefore pi delocalization to occur over more than two atoms (i.e. extended pi-bonds), parallel and overlapping orbitals are needed on ALL of the adjacent atoms involved. As a result, all of the atoms involved in extended pi-bonds are usually hybridized, and NEVER sp3 hybridized. Question 2 0.1 pts

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Historically, the ________ risk an investor is willing to accept, the ________ the potential return for the investment. Question 1 options: 1) more; lesser 2) less; greater 3) more; greater 4) Historically, the risk/return trade-off has not played out in any particular manner.

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The process whereby expectations about a person cause the person to behave in ways that confirm the expectations is called a. confirmation bias. b. self-regulatory attribution. c. the fundamental attribution error. d. the self-fulfilling prophecy.

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All modern humans have about the same number of melanocytes, but genetics control their arrangement and the amount of melanin they produce. O True O False

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(b) Determine the domain of analyticity of $f(z) = Log(z+4-i)$ and explain why? $\oint_{|z|=2} f(z) dz = 0$

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If, after hiring the 6th worker, a firm's output falls, then the marginal product of the 6th worker is negative. Question 6 options: True False

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Calculate the present worth of a geometric gradient series with a cash flow of \$35,000 in year 1 and increases of 5\% each year through year 6. The interest rate is 10\% per year. No Commas, No \$.

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Review important historical foundations of microbiology by completing each sentence. Then, arrange the sentences in chronological order.

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arks) each question) The following is the trial balance J. Leung as at 30 September 2020: Debit Credit Capital Drawings Loan from A. Mak Cash Bank overdraft Sales Purchases S S 32,890 5,200 10,000 510 1,720 45,600 29,300 Returns Inwards 3,800 Returns outwards 2,700 Carriage inwards 960 Carriage outwards 820 Trade debtors 7,390 Trade creditors 4,620 Land and buildings 26,000 Plant and machinery 13,500 Listed investments 4,800 Interest paid 1,200 450 Interest received 630 Rent received 3,720 Inventory 810 Repairs to buildings 360 Plant hire charges 240 Bank charges 98,610 98,610 Further information: 1. The inventory at 30 September 2020 was valued at $4,580. 2. The loan from A.Mak is repayable on 1 January 2027. You are required to prepare the income statement for the period ended 30 September 2020 and the statement of financial position as at that date.

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(5) A downward load P is applied to the truss where the repaired bar BC is formed by connecting two members along the vertical glued joint a-a shown. On the glued joint the failure normal stress is $\sigma_{fail}$ = 25 MPa and the failure shear stresses is $\tau_{fail}$ = 35 MPa. For a factor of safety of 1.75 against failure of the joint, determine the largest load that can be applied. Bar BC has a uniform 25 × 75 mm rectangular cross section. Ans: 59.5 kN

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