Please answer the following questions relating to equilibrium and explain your reasoning. Part A) Suppose that you want to make an acidic buffer…

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Please answer the following questions relating to equilibrium and explain your reasoning.

Part A) Suppose that you want to make an acidic buffer solution. You add 0.93 M Na2HPO4 to 1.23 M KH2PO4. If Ka (for H2PO4− ) = 6.2 × 10−8, what is the pH of this buffer solution?

a. 7.21

b. 7.33

c. 7.09

d. 1.23

Part B) Suppose that you have 25 L of components in a flask at 400 C. The components include 1.8 mol Cl2, 2.2 mol H2, and 1.0 mol HCl.

1,200 people were sampled from a population that is in Hardy-Weinberg equilibrium. Initial genotypic results revealed that there were 432 homozygous…

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1,200 people were sampled from a population that is in Hardy-Weinberg equilibrium. Initial genotypic results revealed that there were 432 homozygous dominant individuals. Given this data, what are the numbers of Aa and aa individuals?

Two balls, of masses = 50 and = 60 , are suspended as shown in the figure. The lighter ball is pulled away to a 66 angle with the vertical and…

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Two balls, of masses = 50 and = 60 , are suspended as shown in the figure. The lighter ball is pulled away to a 66 angle with the vertical and released. Assume that the positive axis is directed to the right.

If you were a member of the Amerian Petroleum Institute staff, and you were trying to position the scientific, microseismic effects of fracturing in

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If you were a member of the Amerian Petroleum Institute staff, and you were trying to position the scientific, microseismic effects of fracturing in context to a meeting of concerned citizens, how would you do it

Ta : A capacitor is charged and then disconnected from the battery . A dielectric is inserted into the capacitor ( but doesn’t fill all of the space

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Please show all work, diagrams, and explanations along with answers.

Ta : A capacitor is charged and then disconnected from the battery . A dielectric is insertedinto the capacitor ( but doesn’t fill all of the space ) . Does the charge on the capacitor plateschange ? Explain .bo : Draw the induced charges on the dielectric .C : Imagine points A , B and C ( to the left of the dielectric , " inside " the dielectric and to theright of the dielectric ) . Is the electric field at those points smaller , larger or the same sizeas it was before the dielectric was inserted ? Explain . Remember that we are assuming thatthe plates and the dielectric are infinitely large .d : Has the capacitance changed ? Explain .G

Question part Points Submissions 1 2 3 4 0/1 0/1 0/1 0/1 0/5 0/5 0/5 0/5 Total 0/4 .Two students are on a balcony 19.0 m above the street.

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Question part Points Submissions 1 2 3 4 0/1 0/1 0/1 0/1 0/5 0/5 0/5 0/5 …Two students are on a balcony 19.0 m above the street. One student throws a ball, b1, vertically downward at 15.7 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down.(a) What is the difference in time the balls spend in the air?1 s(b) What is the velocity of each ball as it strikes the ground?velocity for b1 2 m/svelocity for b2 3 m/s(c) How far apart are the balls 0.570 s after they are thrown?4 m

A small sphere with mass 1.10 hangs by a thread between two large parallel vertical plates 5.00 apart . The plates are insulating and have uniform…

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A small sphere with mass 1.10 hangs by a thread between two large parallel vertical plates 5.00 apart . The plates are insulating and have uniform surface charge densities and . The charge on the sphere is = 8.80×10−6 .

Delille Company manufactures both traditional toothpaste and gel toothpaste, with each type of toothpaste produced in separate departments.

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Delille Company manufactures both traditional toothpaste and gel toothpaste, with each type of toothpaste produced in separate departments. Three support departments support the production departments: power, general factory, and personnel. Budgeted data on the five departments are as follows:

The solubility of Cd(OH)2 in water at a certain temperature is 2.0 x 10-5 mol/L. The Ksp value for Cd(OH)2 is?

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The solubility of Cd(OH)2 in water at a certain temperature is 2.0 x 10–5 mol/L. The Ksp value for Cd(OH)2 is?

The solubility of Cd(OH)2 in water at a certain temperature is 2.0 x 10–5 mol/L. The Ksp valueforCd(OH)2 is?SolutionCd(OH)2 = CdO + H2OThe concentration of CdO and H2O is xSo,Ksp = x*x=…

An electron is fired at a speed vo=5.6 x 106 m/s and at an angle 0 = -45o between two parallel conducting plates that are D = 2.0 mm apart, as in…

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An electron is fired at a speed vo=5.6 x 106 m/s and at an angle θ0 = -45o between two parallel conducting plates that are D = 2.0 mm apart, as in Figure P16.66.  If the voltage difference between the plates is ΔV = 100V, determine (a) how close, d, the electron will get to the bottom plate and (b) where the electron will strike the top plate.