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11. Recall that for any pure substance μ_G7m Use this relationship, the exact differential dG--Sarwap (for...
12. Use the data in problem 11 to calculate the standard free energy, DGº, for the reaction below. cell celi Mg(s) + Pb3* (aq) ® Mg?* (aq) + Pb(s) DG = -217000 J = - 243000 = - 434000 DG = +243000 J (6) DG (c) DG cell cell 13. Obtain the equilibrium constant Ke at 25°C from the free-energy change for the reaction Fe(s) + Cult (94) Feuq) + Cut)
11. Enantiopurity - How pure a substance is in one enantiomer over the other is expressed as a % enantiomeric excess. Consider the following theoretical scenario: CH2OH CH2OH optical rotation: +100° optical rotation: -100° % composition % enantiomeric excess observed rotation In the lab, a polarimeter can give you optical purity (% enantiomeric excess) by comparing against a pure enantiomeric standard: Optical purity = specific rotation of sample - X 100 specific rotation of pure enantiomer Page 2 A mixture...
The internal energy, U, is the total energy of a system. For any isolated system, the internal energy is constant. U is a state function, meaning that any path used in calculating AU ill result in the same answer. For any pure substance or fixed mixture of substances, the internal energy, U, can be determined from any two of the variablesP, V, and T. It is often most convenient to choose V and T as the variables. It is helpful,...
(3): Use any method of your choice to obtain a general solution for the differential equation given below. Assume zero initial condition. y + 4y + 4y = t + sin(t)
protons arid electrons 10) A shorthand way of writing transmutation equations is to show the bombarding particle and the 10)- subsequent emited particle in parentheses. Which particle is produced by 3 Li (p. a)? A)He 10 B) Be 4 C) He 11) In general, as a reaction goes to equilibrium A) AG° decreases. C) AG goes to zero. B) AG decreases. D) AG°f decreases 12) Which of the following is true? 12) A) The larger ΔG, the faster the reaction....
17-1& 17-2 Review WS Describe the relationship between a compound's stability and its heat of formation value. 1. 2. Calculate the heat of formation for butane, CiHio. Make sure you balance the following equation first: CO2(g) What equation would you use to show the general relationship between the heat of a reaction and the heats of formation of the reactants and products? 3. 4. What equation would you use to determine how much energy is given off when a certain...
Find the general solution of the differential equation. Use C1 and C2 to denote any arbitrary constants. 1) y'(t) = y(4t3 + 1) 3) y'(t) = 18t5 – 10t4 + 8 – 2t-2 4) y"(t) = 40e5t + sin(4t)
DIFFERENTIAL EQUATIONS WEBWORK PROBLEM
If you can't read the picture:
Consider two interconnected tanks as shown in the figure above.
Tank 1 initial contains 10 L (liters) of water and 215 g of salt,
while tank 2 initially contains 90 L of water and 355 g of salt.
Water containing 50 g/L of salt is poured into tank1 at a rate of 4
L/min while the mixture flowing into tank 2 contains a salt
concentration of 45 g/L of salt...
5. Use the method of undetermined coefficients to obtain the general solution to the differential equation y" + y = e* + x. (No credit for any other method). y" + y = ex+x Yp = m² + mo m(m+11=0 m=0,-1 Yo = G, eo + Cze* Yc = c + C2 ex
11. Suppose a random sample of 25 students found a correlation of r = –.53 between number of absences and final grade. Is this enough evidence to conclude that there is a relationship between absences and final grades in general? Use α = .05, two -tailed. Use “Tr” technique as illustrtaed on the PowerPoint lecture. Use of any other formula will be considered incorrect. Include your write up as well. (2 pts) please show all work steps.