I need to write a lab plan based on preparing a standard solution-- Standardization of NaOH (aq)
Experiment 8: Preparing a Standard Solution—Standardization of NaOH(aq) Learning Objectives » to understand the meaning of the term primary standard » to learn how to determine the precise concentration of a solution » to learn how to properly prepare, use and read a buret » to practice titration techniques and calculations » to learn how to weighing by difference Read and complete the Prelab Assignment for Experiment 8 (Chemistry 121 Lab Moodle site). Note that these assignments are always due the Sunday the week of lab, by 5 PM. Safety: 3.0 M sodium hydroxide is hazardous and will attack skin and clothing rapidly. Don't wear expensive clothes to lab. Flood any spills with water and ask your instructor or assistant for help. Wear goggles! If solutions are splashed on your face, call for help and use the eyewash. Materials 3 M NaOH, solid KHP (potassium hydrogen phthalate) dried, in weighing bottles, phenolphthalein indicator solution, one buret, four 250-mL Erlenmeyer flasks. Disposal The solutions of KHP and dilute NaOH should be neutralized (5 < pH < 9) and only then may be poured down the drain with lots of water. This is a skill-building experiment, where you will have to work carefully and use equipment skillfully in order to achieve good results. Learning good titration techniques will be helpful in subsequent labs, not only as specific skills, but they illustrate the excellent results that can be achieved if sound technique is employed. Students can work individually or in pairs on this experiment. Remember, it's up to you to make sure that you take part in all lab activities!
In: Chemistry
Name: Date: Exp 1: Observations of Chemical Changes Lab Section: Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl B. HCl + BTB C. NH3 + BTB D. HCl + blue dye E. Blue dye + NaOCl with the 1 drop of HCl F. NaOCl + KI with 1 drop of starch G. KI + Pb(NO3)2 H. NaOH + phenolphthalein I. HCl + phenolphthalein J. NaOH + AgNO3 K. AgNO3 + NH3 after exposure to bright light L. NH3 and CuSO4 Part F: Testing of Various Foods with the NaOCl + KI solution Foods Presence or Absence of Starch Part 2: Household Chemicals with Bromthymol Blue Use the empty pipet in the Auxiliary Supplies Bag to test several (at least 3) household items including household cleaning products with bromothymol blue. Rinse the pipet well before using it on the next household chemical. When finished with this experiment rinse the pipet well and return it to the Auxiliary Bag for use in future experiments. Name the items tested and record their results. Household Chemicals Well No. Observations of the Reaction Conclusion: Questions and Problems: A. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate, NaHCO3). How would you test this material for the presence of sodium bicarbonate? B. Looking at the household chemicals you tested with bromthymol blue, what can you deduce from the test results for each of the household chemicals? C. You found a sample of a solution that you think might be vinegar which is acidic. You are verifying that it is indeed vinegar and you add a few drops of phenolphthalein. The sample turns pink. What does that tell you about this sample? D. You suspect dissolved silver ions in a solution. How would you test this solution to confirm the p
In: Chemistry
Your portfolio had real net returns of 5% in 2014, −4% in 2015, and 2% in 2016. The net inflation rate for each period was 2% in 2014, 4% in 2015, and −1% in 2016. What is the gross, nominal, compound return of your portfolio over those three years?
A) 1.09% B) 6.05% C) 9.04% D) −3.05% E) 2.82%
In: Finance
A firm’s balance sheets for year-end 2016 and 2017 contain the following data. All items are in millions of dollars.
| Dec. 31, 2016 | Dec. 31, 2017 | |||||
| Accounts receivable | 33.0 | 36.5 | ||||
| Inventories | 26.0 | 30.5 | ||||
| Accounts payable | 13.0 | 26.5 | ||||
What happened to investment in net working capital during 2017? (Enter your answer in millions.)
In: Finance
On April 20, 2016, Maskell Co. purchased an asset costing $66,000 with a useful life of 9 years and a residual value of $6,000. The company uses the sum-of-the-years'-digits depreciation.
Required:
Compute depreciation expense for 2016 using the
a. nearest whole month method
b. nearest whole year method
c. half-year convention method
In: Accounting
Anthony reached age 70 1/2 in September of 2015 and took his required minimum distribution from his traditional IRA on April 1, 2016. What is the deadline for his next required minimum distribution?
a) December 31, 2016
b) April 1, 2017
c) April 15, 2017
d) December 31, 2017
In: Accounting
At the beginning of 2016, Robotics Inc. acquired a manufacturing
facility for $12 million. $9 million of the purchase price was
allocated to the building. Depreciation for 2016 and 2017 was
calculated using the straight-line method, a 25-year useful life,
and a $1 million residual value. In 2018, the company switched to
the double-declining-balance depreciation method.
What is depreciation on the building for 2018?
In: Accounting
Question 2 On December 15, 2015, a public company receives an order from a customer for services to be performed on December 28, 2015. Due to a backlog of orders, the company does not perform the services until January 3, 2016. The customer pays for the services on January 6, 2016. When should revenue be recorded for the company? Why (support your argument
In: Accounting
based upon the following information for Winter Corporation ( employer identification number :43-1234567), complete a form 8827 (credit for prior year minimum tax-corporation).
2016 regular income tax liability 34000
2016 tentative minimum tax 26500
alternative minimum tax for 2015 36000
minimum tax credit carryover from 2015 12000
In: Accounting
WRITE ON A UAE COMPANY
COMPANY: ETISALAT TELECOMMUNICAITON
1. INTRODUCTION
2. PRODUCT
3. MARKETS
4. FINANCIAL REPORT OF 2015 AND 2016 ETISALAT
5. ANY THREE TYPE OF RISK RELATED TO THE ETISALAT
6. Liquidity Ratio: 2015, 2016
7) Efficiency Ratios 2015,2016
8) Solvency Ratios . 2015,2016
9) Profitability Ratios 2015,2016
In: Operations Management