Reference no: EM13773454
Problem 1
When 500.0 mL of 0.10 M NaOH solution (containing Na+ and OH- ions) is mixed with 500.0 mL of 0.10 M Mg(NO3)2 solution (containing Mg2+ and NO3- ions) a precipitate of solid Mg(OH)2 forms, and the resulting aqueous solution has pH = 9.43. Based on this information, determine the value of Ksp for Mg(OH)2. Show your reasoning clearly.
Problem 2
0.30 moles of HOCl are added to sufficient water to make 1.0 L of solution at 25 °C. Finish the table The Ka of HOCl, at 25 °C, is 2.9 × 10-8, determine x.
Problem 3
A certain gaseous hydrocarbon is found to be 88.8% C and 11.2% H by mass. The compound has a density of 2.12 g/L at 31 °C and 742 torr. a) What is the empirical formula of the compound? b) What is the molecular weight of the compound? c) What is the molecular formula of the compound? d) Draw a possible structural formula for the compound.
Problem 4
Salicylic acid (shown below) is a weak acid with Ka = 3.0 × 10-4.
a) Complete the following reaction of salicylic acid with water.
b) Calculate the pH of 50 mL of 0.15 M salicylic acid.
Problem 5
a) Write a chemical equation that describes the dissolution of solid AuCl3 to Au3+ and Cl- ions found in water. b) Write the expression for the Ksp of AuCl3. c) Calculate how many grams of Au3+ would be found in one liter of a saturated solution of AuCl3. The Ksp for AuCl3 is 3.2 × 10-23.
Problem 6
Assume that you dissolve 10.0 g of a mixture of NaOH and in 250.0 mL of water and titrate with 1.50 M hydrochloric acid. The titration is complete after 108.9 mL of the acid has been added. What is the mass in grams of each substance in the mixture?
|
Refining problem-solving capabilities
: The purpose of this assignment is to assist you in refining problem-solving capabilities that organizations already possess for use in business ethics applications.
|
|
List feature of huck language that makes way he speak unique
: List the features of hucks language that makes the way he speaks unique.
|
|
What conflicting ethical norms are involved in your decision
: As a future business manager, you may be forced to make tough decisions regarding white-collar crime. Imagine that you discover that one of your employees planned to offer a bribe to an agent from the Environmental Protection Agency to prevent you..
|
|
Define free will-truth-knowledge and opinion
: Describe a situation in which critical and creative thought could have been used for a better outcome. Describe why it is important to think critically and creatively in similar situations. Define free will, truth, knowledge, and opinion. Explain ..
|
|
Write a chemical equation that describes the dissolution
: The titration is complete after 108.9 mL of the acid has been added. What is the mass in grams of each substance in the mixture?
|
|
Issue became a hot button issue for the industry
: First, choose the segment of the Hospitality Industry that interests you the most: Foodservice, Lodging, Travel & Tourism. NEXT, choose an industry hot topic or current issue that is affecting that industry.
|
|
Read the articles about two famous thinkers
: Select and read the articles about two famous thinkers. Find additional articles in the University Library or on the Internet.
|
|
Write about any aspect of the story the metamorphosis
: Write about any aspect of The story the Metamorphosis you would like, provided that your post is not a summary and that it is 150 WORDS.
|
|
The obtained value of the appropriate statistic for testing
: 1. For a given N, the interval that bounds the population mean at the 99% confidence level is ____ that which bounds the population mean at the 95% confidence level. A. equal to B. greater than C. less than D. can't be determined
|