How to prepare hexane/ ethyl acetate 4:1?

How does one solve this problem to get the answer shown in the photo? Self-test 11.12) At what separation does the minimum of the potential energy curve occur for a Lennard-Jones potential? Hint: Solve for r after setting the first derivative of the potential energy function to zero. Answer: r= 21/6...

Check my work The Oklahoma Pipeline Company projects the following pattern of inflows from an investment. The inflows are spread over time to reflect delayed benefits. Each year is independent of the others. Year 1 Cash Inflow Probability $ 65 0.20 0.60 0.20 Year 5 Cash Inflow Probability $ 50 0.25 ...

Find the general solution of y" – 54"' + 6y' = 0. 8.8 A BRIEF TABLE OF LAPLACE TRANSFORMS F(s) (s > 0) n! " (s > 0) (1 - integer > 0) T(+1) I". P> -1 (8 >0) 8 a n! (8 - a)"+1 (x > 0) On integer > 0) Coswt (s > 0) 32.+wa sin! (8 > 0) EM cos...

Given the first and last term, a = 6, t9 = 24, how do you find the sum of the arithmetic series?...

Accounting for Software Development Costs During 2020, PC Software Inc. developed a new personal computer database management software package. Total experiditures on the project were $4,800,000, of which 40% occurred after the technological feasibility of the product had been established. The produ...

QUESTIONS Dain's Diamond Bit Driling purchased the following assets this year. Assume its taxable income for the year was 563.000 before deducting any 5179 expense (assume no bonus depreciation) Asset Drill Bits (5 year) Drill Bits (5-year) Commercial Building Purchase Date January 25 July 25 Ap...

LeBron, Dennis, and Susan formed the Bar T LLC at the beginning of the current year. LeBron and Dennis each contributed $200,000 and Susan transferred several acres of agricultural land she had purchased two years earlier to the LLC. The land had a tax basis of $50,000 and was appraised at $300,000....

2. What is the capitalist economic system? And what is it that capitalism is unfair to the workers...

Grainger Company produces only one product and sells that product for $110 per unit. Cost information for the product is as follows: Direct Material Direct Labor Variable Overhead Fixed Overhead $16 per Unit $25 per Unit $5 per Unit $34,000 Selling expenses are $4 per unit and are all variable. Admi...

Consider the arrangement shown in the figure below where R = 9.00 Ω,L = 1.00 m, and B = 2.00T. app HINT (a) At what constant speed (in m/s) should the bar be moved to produce a current of 1.30 A in the resistor? m/s (b) What power (in W) is delivered to the resistor? (c) What magnetic force (i...

A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 33 points with 99%confidence assuming s=13.2 based on earlier​ studies? Suppose the doctor would be content with 95 % co...

4. Given the calibration data in the table below, calculate the equilibrium concentration of (FeSCN2+1 if the absorbance is 0.460. You may have to plot a graph. [FeSCN2+] Absorbance [FeSCN2+] Absorbance 0.250 x 10-4 0.120 1.00 x 10-4 0.481 0.500 x 10-4 0.240 1.60 x 10-4 0.770 Part A Determine the va...

Pre-Lab Questions For each of the following structures, first indicate its function in the fetus: and then note its fate (what happens to it or what it is converted to after birth). Circle the blood vessel that carries the most oxygen-rich blood. Structure Fate Function in the fetus Umbilical artery...

17. In the function f(x) = a(x + 2)(x - 3)', a and b are both integer constants and b is positive. If the end behavior of the graph of y = f(x) is positive for both very large negative values of x and very large positive values of x, what is true about a and b? A. a is negative, and b is even. B...

In order to financially stimulate the nation, the Federal government injected $900 billion dollars into the economy. However, the results were less than spectacular. One reason could have been a failure to understand the marginal propensity to consume. Assume the marginal propensity to consume (MPC)...

1 Find the value of h for which the following linear system is consistent and find the general solution in vector form of the resulting consistent linear system. x1+ x2+x3 +2x4 = 3 2x1+2x2+3x3+3x4 = h 5x1+5x2+6x3+9x4 = 10 numbers next to x’s are base numbers...

Mazie Supply Co. uses the percent of accounts receivable method. On December 31, it has outstanding accounts receivable of $103,500, and it estimates that 4% will be uncollectible. 1.42 points Prepare the year-end adjusting entry to record bad debts expense under the assumption that the Allowance fo...