100 mL of .220 M copper ll chloride is mixed with 100 mL of .750 M sodium hydroxide according to the following equation:

CuCl2 + 2NaOH -->Cu(OH)2 + 2NaCl

1. What is the mass of solid product formed?

2. Calculate the concentration of Cu2+ remaining in solution.

3. Calculate the concentration of OH- remaining in solution.

4. Calculate the concentration of Cl- remaining in solution

5. Calculate the concentration of Na+ remaining in solution.

12.14.  A random sample of 100 men and 100 women were asked whether they would be willing to work as unpaid volunteers. The results indicate that 54% of the men and 64% of the women responded YES to this question, while 46% of the men and 36% of the women responded NO to the question. The chi square test was used to determine whether the men and women in the study differ in their willingness to work as unpaid volunteers. The obtained chi square value was 2.06 (c²_(obt)=2.06). The appropriate critical value at p=.05 is 3.841 (c²_{crit (.05)}=3.841).

a.         Which chi square test was used to analyze the data and determine whether there are gender differences between the responses of the men and women who participated in the survey? Explain.

b.             What was the null hypothesis for the study?

c.             Was there a gender difference between the responses of the male and female participants? Explain.

You want to short 100 shares of H&B’s stock which is currently selling for $100. The dealer offers you a short position with an initial margin of 50% BUT with a maintenance margin of 40%. You use all of your funds to meet the initial margin. Suppose you are given knowledge of the stock’s future prices but have to act on it today (when stock is $100).

Day 2: $105 Day 3: $110 Day 4: $90

1. Can you make it through margin requirements without adding funds? How much do you need to meet the minimum margin?

2. Suppose your lender invests your collateral and gives you a part of the interest, rebate rate (R). What rebate rate do you require for the position to survive until day 4?

3. Suppose the rebate rate is zero, but a lender offers to give you the money needed to float your position, with the loan and its interest to be paid back on day 4 (after closing out your short). What is the maximum rate of interest you would be willing to pay?

Since the end of The Mandalorian, 65% of parents (N=100) and 46% of non-parents (N=100) are subscribed to Disney+. Test the null hypothesis that parents and non-parents are equally likely to subscribe to Disney+ (alpha=0.05).

You add 100 mL of 60 mM NaH₂PO4 and 100 mL of 40 mM Na₂HPO4 to 300 mL water. What is the final pH of the solution?

A solution is prepared by mixing 100 mL of .01 M Pb(NO3)2 and 100 mL of .001 M NaF. Will PbF2(s) precipitate in this reaction? Calculate the concentration of F- ions present at equilibrium.

PbF2(s) <--> Pb2+(aq) + 2F-(aq) Kc= 3.7E-8

Please show all work! Thank you!

Player 1 and Player 2 choose and integer between 0 and 100 (including 0 and 100). Their choice is made simultaneously and independently. Suppose Player 1 chooses x and Player 2 chooses y. If x < y Player 1 obtains x and Player 2 obtains zero. Similarly, if y < x Player 2 obtains y and Player 1 obtains zero. If x = y then each one obtains x/2 = y/2. Find all pure strategy Nash equilibrium in this game.

1. Is dividing by 100 the same as multiplying by 1/100? Explain your answer using 60 as an example and showing your calculations.

2. How do you find a missing element (P, B, or R) by using one of the variations of the formula P = B x R? Give an example.

3. Describe the three components of a percent problem.

4. Distinguish between rate and part.

5. A common error in working with percent problems is to confuse the base and the part. Describe how you will be able to distinguish between the two components.

1. A 100-watt lightbulb radiates energy at a rate of 100 J/s (The watt, a unit of power, or energy over time, is defined as 1 J/s). If all of the light emitted has a wavelength of 505nm, how many photons are emitted per second? (Assume three significant figures in this calculation.)

2.Calculate the de Broglie wavelength of a 143-g baseball traveling at 80 mph .

3.An electron undergoes a transition from an initial (ni) to a final (nf ) energy state. The energies of the ni and nf energy states are −2.179×10⁻¹⁸ J and −8.720×10−20 J, respectively.

Calculate the wavelength (λ) of the light in nanometers (nm) corresponding to the energy change (ΔE) value of this transition. You can use the following values for your calculations:

Planck′s constant (h)speed of light (c)1 m===6.626×10−34 J⋅s2.998×108 m/s109 nm