Numerade

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11. (9pts) Fill in the table below with a "yes" or "no" to indicate whether the base in the left hand column will significantly deprotonate the acids in the top row. pKa's given below are for the conjugate acid of the base listed. $$N \equiv C$$ $$C \equiv N$$ H H pKa = 11.1 EtO O O OEt H H pKa = 16.4 O O O H H pKa = 4.97 $$NaHCO_3$$ (pKa 6.3) NaOH (pKa 15) $$NaNH_2$$ (pKa 35)

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other maths question : Set A = {2, 4, 6, 8, 10, 12}and set B = {1, 2, 3, 4, 5}. Find A\cup B and A\cap B. don't answer i will give 100% dislike if you answer my question

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For the sample data below, construct a frequency histogram and describe its shape, and identify the most appropriate measure of center and spread to be used. Shape: [Select] Best measure of Center: [Select] Best measure of Spread: [Select] Estimated average value: [Select] Estimated standard deviation value: [Select] Height (in Frequency inches) 50-53 5 53-56 8 56-59 12 59-62 13 62-65 11

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You are currently 25 years old and would like to have $2,000,000 in a retirement account when you retire at age 60. If you are able to consistently earn 6% on your money, how much do you need to save each month to achieve your goal?

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At P&C Insurers, if the combined ratio is less than 100 percent, the premiums charged were sufficient to cover expenses only. both losses and expenses. losses only. losses, expenses, and investment returns on premiums.

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Problem 12.217 Problem 12.217 The crate C is being lifted by moving the roller at A downward with a constant speed of $v_A = 2 \text{ m/s}$ along the guide. When the roller is at B, the crate rests on the ground. Neglect the size of the pulley in the calculation. Hint Relate the coordinates $x_C$ and $x_A$ using the problem geometry, then take the first and second time derivatives. (Figure 1) Figure 1 of 1 Part A Determine the magnitude of the velocity of the crate at the instant $s = 1 \text{ m}$. Express your answer to three significant figures and include the appropriate units. $v_C =$ Value Units Submit My Answers Give Up Part B Determine the magnitude of the acceleration of the crate at the instant $s = 1 \text{ m}$. Express your answer to three significant figures and include the appropriate units. $a_C =$ Value Units Submit My Answers Give Up

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4. (20 points) Use the node-voltage method to derive a system of two equations in the two unknowns $v_1$ and $v_2$. Write the system in matrix form.

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The National Association of Realtors estimates that 23% of all homes purchased in 2004 were for investment purposes. If a sample of 800 residences is gathered, what is the probability that the proportion of houses sold in 2004 and used as investment property would be more than 0.21875? a. 0.7764 b. 0.0044 c. 0.2236 d. 0.9956

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An entity provided the following pension plan information: Projected benefit obligation - January 1, 2016 3,500,000 Fair value of plan assets - January 1, 2016 2,800,000 Pension benefits paid during the year 250,000 Current service cost for 2016 1,750,000 Past service cost for 2016 (vesting period 5 years) 425,000 Actual return on plan assets 180,000 Contribution to the plan 1,500,000 Actuarial loss due to change in assumptions on projected benefit obligation 200,000 Discount or settlement rate 10% What is the projected benefit obligation on December 31, 2016? ? 5,775,000 ? 5,550,000 ? 5,075,000 ? 5,975,000

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5.49 For the circuit in Fig. P5.49, determine $i_L(t)$ and plot it as a function of $t$ for $t \ge 0$. The element values are $I_0 = 4 \text{ A}$, $R_1 = 6 \Omega$, $R_2 = 12 \Omega$, and $L = 2 \text{H}$. Assume that $i_L = 0$ before $t = 0$.

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leonard s.