The anthocyanin in hydrangeas can be isolated and used as an environmentally friendly pH indicator for titrations. At the end of a titration reaction of a strong acid with a strong base, you have a neutral solution. What color do you expect anthocyanin to be at the end of a titration? Describe a lab experiment to support your prediction.

Python program to simulate breaking a unit-length pencil into two places. Repeat the experiment 100,000 times and determine the average size of the smallest, middle-size, and the largest pieces. Record the estimate of the average sizes in your program

Please use comments to better explain what is happening in the code

What variables affect the damping of a spring executing simple harmonic motion?

What are the independent variables, and what variables would need to be controlled in an experiment?

I'm attempting to complete an investigation where I measure the decrease in amplitude of a damped spring, and to prove the relationship between variables in the motion.

Thanks!

1. What is the benefit to studying twins in learning about abnormality? What are the limitations, do you think? Would it be more beneficial to study monozygotic or dizygotic twins? Why?

2. Describe a correlation. Then describe an experiment. What are the similarities? What are the differences? Be specific. (roughly one big paragraph)

David R. and Ella M. Cole (ages 39 and 38, respectively) are husband and wife who live at 1820 Elk Avenue, Denver, CO 80202. David is a regional sales manager for Wren Industries, a national wholesaler of plumbing and heating supplies, and Ella is a part-time dental hygienist for a chain of dental clinics.

David is classified by Wren as a statutory employee with compensation for 2016 (based on commissions) of $95,000. He is expected to maintain his own office and pay for all business expenses from this amount. Wren does not require him to render any accounting as to the use of these funds. It does not withhold Federal and state income taxes but does withhold and account for the payroll taxes incurred (e.g., Social Security and Medicare). The Coles are adequately covered by Wren's noncontributory medical plan but have chosen not to participate in its § 401(k) retirement plan.

David's employment-related expenses for 2016 are summarized below.

The entertainment involved business meals for purchasing agents, store owners, and building contractors. The business gifts consisted of $50 gift certificates to a national restaurant. These were sent by David during the Christmas holidays to 18 of his major customers.

In addition, David drove his 2014 Ford Expedition 11,000 miles for business and 3,000 for personal use during 2016. He purchased the Expedition on August 15, 2013, and has always used the automatic (standard) mileage method for tax purposes. Parking and tolls relating to business use total $340 in 2016.

When the Coles purchased their present residence in April 2013, they devoted 450 of the 3,000 square feet of living space to an office for David. The property cost $440,000 ($40,000 of which is attributable to the land) and has since appreciated in value. Expenses relating to the residence in 2016 (except for mortgage interest and property taxes; see below) are as follows:

In terms of depreciation, the Coles use the MACRS percentage tables applicable to 39-year nonresidential real property. As to depreciable property (e.g., office furniture), David tries to avoid capitalization and uses whatever method provides the fastest write-off for tax purposes.

Ella works part-time as a substitute for whichever hygienist is ill or on vacation or when one of the clinics is particularly busy (e.g., prior to the beginning of the school year). Assumed that Ella is an employee (not an independent contractor). Besides her transportation, she must provide and maintain her own uniforms. Her expenses for 2016 appear below.

Ella's salary for the year is $42,000, and her Form W–2 for the year shows income tax withholdings of $4,000 (Federal) and $1,000 (state) and the proper amount of Social Security and Medicare taxes. Because Ella is a part-time employee, she is not included in her employer's medical or retirement plans.

Besides the items already mentioned, the Coles had the following receipts during 2016.

For several years, the Coles' household has included David's divorced mother, Sarah, who has been claimed as their dependent. In late November 2016, Sarah unexpectedly died of coronary arrest in her sleep. Unknown to Ella and David, Sarah had a life insurance policy and a savings account (with David as the designated beneficiary of each). In 2015, the Coles purchased two ATVs for $14,050. After several near mishaps, they decided that the sport was too dangerous. In 2016, they sold the ATVs to their neighbor.

Additional expenditures for 2016 include:

In 2016, the Coles made quarterly estimated tax payments of $1,400 (Federal) and $500 (state) for a total of $5,600 (Federal) and $2,000 (state).

Relevant Social Security numbers are:

Required:

Using the appropriate forms and schedules, compute the Coles' Federal income tax for 2016. Disregard the alternative minimum tax (AMT) and the various education credits

Budgeted Income Statement and Supporting Budgets The budget director of Feathered Friends Inc., with the assistance of the controller, treasurer, production manager, and sales manager, has gathered the following data for use in developing the budgeted income statement for December 2016: Estimated sales for December: Bird house 3,200 units at $50 per unit Bird feeder 3,000 units at $70 per unit Estimated inventories at December 1: Direct materials: Wood 200 ft. Plastic 240 lbs. Finished products: Bird house 320 units at $27 per unit Bird feeder 270 units at $40 per unit Desired inventories at December 31: Direct materials: Wood 220 ft. Plastic 200 lbs. Finished products: Bird house 290 units at $27 per unit Bird feeder 250 units at $41 per unit Direct materials used in production: In manufacture of Bird House: Wood 0.80 ft. per unit of product Plastic 0.50 lb. per unit of product In manufacture of Bird Feeder: Wood 1.20 ft. per unit of product Plastic 0.75 lb. per unit of product Anticipated cost of purchases and beginning and ending inventory of direct materials: Wood $7.00 per ft. Plastic $1.00 per lb. Direct labor requirements: Bird House: Fabrication Department 0.20 hr. at $16 per hr. Assembly Department 0.30 hr. at $12 per hr. Bird Feeder: Fabrication Department 0.40 hr. at $16 per hr. Assembly Department 0.35 hr. at $12 per hr. Estimated factory overhead costs for December: Indirect factory wages $75,000 Depreciation of plant and equipment 23,000 Power and light $6,000 Insurance and property tax 5,000 Estimated operating expenses for December: Sales salaries expense $70,000 Advertising expense 18,000 Office salaries expense 21,000 Depreciation expense—office equipment 600 Telephone expense—selling 550 Telephone expense—administrative 250 Travel expense—selling 4,000 Office supplies expense 200 Miscellaneous administrative expense 400 Estimated other income and expense for December: Interest revenue $200 Interest expense 122 Estimated tax rate: 30% Required: 1. Prepare a sales budget for December. Feathered Friends Inc. Sales Budget For the Month Ending December 31, 2016 Unit Sales Volume Unit Selling Price Total Sales Bird house Bird feeder Total revenue from sales 2. Prepare a production budget for December. Feathered Friends Inc. Production Budget For the Month Ending December 31, 2016 Units Bird House Bird Feeder Expected units to be sold Plus desired inventory, December 31, 2016 Total Less estimated inventory, December 1, 2016 Total units to be produced 3. Prepare a direct materials purchases budget for December. Feathered Friends Inc. Direct Materials Purchases Budget For the Month Ending December 31, 2016 Wood Plastic Total Required units for production: Bird house Bird feeder Plus desired units of inventory, December 31, 2016 Total Less estimated units of inventory, December 1, 2016 Total units to be purchased Unit price Total direct materials to be purchased 4. Prepare a direct labor cost budget for December. Feathered Friends Inc. Direct Labor Cost Budget For the Month Ending December 31, 2016 Fabrication Department Assembly Department Total Hours required for production: Bird house Bird feeder Total Hourly rate Total direct labor cost 5. Prepare a factory overhead cost budget for December. Feathered Friends Inc. Factory Overhead Cost Budget For the Month Ending December 31, 2016 Indirect factory wages Depreciation of plant and equipment Power and light Insurance and property tax Total 6. Prepare a cost of goods sold budget for December. Work in process at the beginning of December is estimated to be $29,000, and work in process at the end of December is estimated to be $35,400. Feathered Friends Inc. Cost of Goods Sold Budget For the Month Ending December 31, 2016 Direct materials: Cost of direct materials available for use Cost of direct materials placed in production Total manufacturing costs Total work in process during the period Cost of goods manufactured Cost of finished goods available for sale Cost of goods sold 7. Prepare a selling and administrative expenses budget for December. Feathered Friends Inc. Selling and Administrative Expenses Budget For the Month Ending December 31, 2016 Selling expenses: Sales salaries expense Advertising expense Telephone expense—selling Travel expense—selling Total selling expenses Administrative expenses: Office salaries expense Depreciation expense—office equipment Telephone expense—administrative Office supplies expense Miscellaneous administrative expense Total administrative expenses Total operating expenses 8. Prepare a budgeted income statement for December. Feathered Friends Inc. Budgeted Income Statement For the Month Ending December 31, 2016 Operating expenses: Total operating expenses Other income: Other expenses:

Indicate which of the following are valid C++ variable names and which are not. If not, state the reason the name is invalid.