Hess's Law to the following reactions:

a) CaO (s) + 2HCl --> CaCl2 + H2O

b Ca(OH)2 + 2HCl --> CaCl2 + 2H2O

c) CaO (s) + H2O --> Ca(OH)2

Theoretically, which one is the correct relationship for the enthalpy changes of three reactions above?

a) ΔHa = ΔHc - ΔHb b) ΔHa = ΔHc + ΔHb

c) ΔHa = ΔHb - ΔHc d) ΔHa = 2ΔHb + ΔHc

Also explain why the Hess's law applies here by using the first law of thermodynamics?

1.（a）How might the fact that plants do not move influence their ability to adapt to climate change and other environmental changes?

(b)What are the main functions of a seed? Why is it not surprising that seeds are an excellent source of nutrients?

(c)Some pollen grains are dry and some are sticky. Which would you expect to be carried on wind and which on the body of a pollinator? Many people have pollen allergies. Suggest whether dry or sticky pollen would cause more allergies. Why?

the company is rite aid 10-k filing of 2020 answers come from the filing

1. Briefly describe your company's investments and intangible assets.

2. Does your company list "Other Assets?" If so, what items are classified in this category?

3. Comment on any significant changes in individual assets or liabilities.

4. Does your company have any long-term liabilities? If so, state the largest long-term liability and when it is due?

As you look back on the course, consider how marketing affects your daily life and how your understanding of marketing has changed. To illustrate some of the marketing components that you have learned, identify a specific product that could benefit from a new marketing strategy. Describe this product and explain how you could use the information from this course to recommend changes. Make sure to include what research strategies you would recommend the company use to inform the new strategies.

Consider the pizza restaurants and explain the following issues.

1. Explain the effect of a horizontal integration of all the firms in the industry on the pricing behavior of the merger.
2. Given the merger in point 1, explain the changes in the concentration of the industry.
3. Given the merger in point 1, explain the relationship between the elasticity of the industry demand and that of the firm.
4. Given the merger in point 1, explain how entry into the industry is affected.
5. Explain the value of the Lerner index for the competitive market.
6. Explain why the competitive market has a very low concentration.

A bookstore owner has recently surveyed a random sample of 300 customers. She would like to determine whether or not the mean age of her customers is over 35. If so, she plans to alter the interior design of her bookstore to appeal to an older crowd. If not, no interior design changes will be made. Suppose she found that the sample mean was 35.5 years and the population standard deviation was 5 years. What is the p-value associated with the test statistic?

SHOW WORKING PLS

A wave pulse travels along a string at a speed of 250 cm/s . Note that parts a - d are independent and refer to changes made to the original string. Units in cm/s. Pease show work, thank you.

A) What will be the speed if the string's tension is doubled?

B) What will be the speed if the string's mass is quadrupled (but its length is unchanged)?

C) What will be the speed if the string's length is quadrupled (but its mass is unchanged)?

D) What will be the speed if the string's mass and length are both quadrupled?

An annuity pays $1500 weekly for 4 years and then $4100 weekly for the next 7 years. Determine the discounted value if the interest rate is j52=7.9%. *Do not round intermediate steps*

Charlie borrowed $112000 today. The interest rate on the loan is j1=4.3% for the first 5 years, then it changes to j1=7.2% thereafter. To repay the loan, Charlie makes yearly payments of R dollars (in the end of year) from year 3 to year 11. What is R? *Do not round intermediate steps*

In chapter 25 we see the process of how monetary policy affects the overall economy. The transmission mechanisms show the variables that change when the Fed takes action. Without identifying the 9 channels by name, identify the variables that change when the Fed initiates policy. Then explain how changes in these variables affect aggregate demand. Finally, explain what happens to real GDP. Look at this as a chain reaction. In your answer assume the Fed initiates an expansionary monetary policy action.

Exchange Rate Effects on Industry Using shifts in supply and demand curves, describe how a change in the exchange rate affected your industry. Label the axes, and state the geographic, product, and time dimensions of the demand and supply curves you are drawing. Explain what happened to industry price and quantity by making specific references to the demand and supply curves. How can you profit from future shifts in the exchange rate? How do you predict future changes in the exchange rate?