B. Permeability of starch and iodine

1. Data table:

2. Based on your results, you can tell that the pores in the dialysis tubing are

( larger or smaller ) than the size of molecule of I₂KI. Explain your answer using your results.

3. Based on your results, you can tell that the pores in the dialysis tubing are

( larger or smaller ) than the size of molecule of starch. Explain your answer using your results.

4.   Describe the results of the weight of the tubing before and after the incubation period. What does this result illustrate about the ability of starch to pass through the pores of the dialysis tubing?

The following selected transactions relate to investment activities of Ornamental Insulation Corporation during 2021. The company buys debt securities, not intending to profit from short-term differences in price and not necessarily to hold debt securities to maturity, but to have them available for sale in years when circumstances warrant. Ornamental’s fiscal year ends on December 31. No investments were held by Ornamental on December 31, 2020.

(Hint: Interest must be accrued.)

Required:
1. Prepare the appropriate journal entry for each transaction or event during 2021, as well as any adjusting entries necessary at year end. For any sales, prepare entries to update the fair-value adjustment, record any reclassification adjustment, and record the sale.
2. Indicate any amounts that Ornamental Insulation would report in its 2021 income statement, 2021 statement of comprehensive income, and 12/31/2021 balance sheet as a result of these investments. Include totals for net income, comprehensive income, and retained earnings as a result of these investments.

Journal entry worksheet

• Record the acquisition of 5% Distribution Transformers Corporation bonds costing $600,000 at face value.

Note: Enter debits before credits.

• Record the acquisition of $1,200,000 of American Instruments’ 7% bonds at face value.

Note: Enter debits before credits.

• 
  Record the entry for the semiannual interest received on the Distribution Transformers bonds.

Note: Enter debits before credits.

• Record the entry to adjust to fair value on the date of sale of the Distribution Transformers bonds.

Note: Enter debits before credits.

• 
  Record the entry for the reclassification adjustment on the date of sale.

Note: Enter debits before credits.

• 
  Record the entry for sale of Distribution Transformers bonds for $645,000.

Note: Enter debits before credits.

• 
  Record the acquisition of $1,600,000 of M&D Corporation 3% bonds at face value.

Note: Enter debits before credits.

• 
  Record the interest accrual for American Instruments bonds.

Note: Enter debits before credits.

• 
  Record the interest accrual for M&D bonds.

Note: Enter debits before credits.

• 
  Record the entry to adjust fair value of the investments at year-end.

Note: Enter debits before credits.

Two ice skaters, Daniel (mass = 65.0 kg) and Rebecca (mass = 45.0 kg) are practicing on the ice. Daniel stops to tie his lace, and while at rest he is struck by Rebecca, who is moving 12.0 m/s before she collides with him. After the collision, Rebecca is moving forward at 8.50 m/s at a 53 degree angle with respect to her initial direction. What is the velocity vector (magnitude and direction, or x- and y-components) of Daniel after the collision? Assume frictionless ice. Hint: Momentum is conserved separately in both the x- and y-directions.

A 2.4 kg block hangs from the bottom of a 2.0 kg, 1.6 m long rod. The block and the rod form a pendulum that swings out on a frictionless pivot at the top end of the rod. A 10 g bullet is fired horizontally into the block, where it sticks, causing the pendulum to swing out to an angle of 45 degrees. You can treat the wood black as a point mass. What is the moment of inertia of the pendulum about the pivot after the collision? What was the angular velocity of the bullet and block combination right after the impact? What was the initial speed of the bullet before the impact?

Titration Problem:

Lactic acid, HC₃H₅O₃ (see right for structure), builds up in muscles after vigorous exercise. It is a weak acid with a pK_a = 3.86.

Consider the following titration:

25.0 mL 0.500 M lactic acid is titrated with 1.00 M NaOH.

Answer the following questions:

1. What is the pH of the lactic acid solution before any NaOH is added?

2. What is the pH after 5.00 mL of 1.00 M NaOH is added?

3. What is the pH at the equivalence point?

4. What is the pH when 25.0 mL of 1.00 M NaOH has been added?

A manufacturer of fabricated metal products has acquired a new plasma table for $37,000. It is projected that the acquisition of this equipment will increase revenue by $10,000 per year. Operating costs for the machine will average $2,600 per year. The machine will be depreciated using the MACRS method, with a recovery period of 7 years. The company uses an after-tax MARR rate of 10% and has an effective tax rate of 30%.

2. Now, suppose that the duration of the project is six years and that an estimate of the value of the equipment cannot be obtained from the marketplace.

2.5. What conclusion can be drawn by comparing the results of the before- and after-tax analyses?

An investor purchases a just-issued 30-year, 10.500% semiannual coupon bond at 108.235 percent of par value and sells it after 15 years. The bond’s yield to maturity is 9.655% at time of sale, and falls to 9.100% immediately after the purchase but before the first coupon is received. All coupons are reinvested to maturity at the new yield to maturity. Does the investor realize a capital gain or loss on the sale, and by what amount expressed in % of PAR?

1. What interaction does the digestive system have with the nervous system in order for the digestive system to work properly.?

A person drinks a regular Coca-Cola for breakfast. The changes in blood glucose levels over time right before the person drinks the Coca-Cola (170 mg).... 20 minutes after (290 mg).... and 3 hours after (220 mg)

2. Discuss from a physiological perspective why the glucose levels change from (170mg) (290 mg), and (220 mg).

3. Is there anything else you can conclude from this data?

An investor purchases a just-issued 30-year, 10.500% semiannual coupon bond at 108.235 percent of par value and sells it after 15 years. The bond’s yield to maturity is 9.655% at time of sale, and falls to 9.100% immediately after the purchase but before the first coupon is received. All coupons are reinvested to maturity at the new yield to maturity. Does the investor realize a capital gain or loss on the sale, and by what amount expressed in % of PAR?

On June 30, Sharper Corporation’s stockholders' equity section of its balance sheet appears as follows before any stock dividend or split. Sharper declares and immediately distributes a 50% stock dividend. Common stock—$10 par value, 120,000 shares authorized, 74,000 shares issued and outstanding $ 740,000 Paid-in capital in excess of par value, common stock 320,000 Retained earnings 720,000 Total stockholders’ equity $ 1,780,000 Required: (1) Prepare the updated stockholders' equity section after the distribution is made. (2) Compute the number of shares outstanding after the distribution is made.