What is the mass in grams of each substance

Reference no: EM13774783

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?

Reference no: EM13774783

Questions Cloud

Database administrator for department store : The Strayer Oracle Server may be used to test and compile the SQL Queries developed for this assignment. Your instructor will provide you with login credentials to a Strayer University maintained Oracle server.

Utilitarianism, kantianism, and aristotelianism issue : Define and critique the differences between the concepts of morality and ethics.

Discuss a current biomedical issue : Your team has been assigned to give a presentation to your organization's board of ethics. The team will discuss a current biomedical issue that faces your organization and its social responsibility toward the issue.

What are the legal and ethical ramifications of the employee : What are the legal and ethical ramifications of the employee's offer to the customs official? Would it make a difference if the officer requested a $1000 gift to his son's soccer team in order to expedite the shipments

What is the mass in grams of each substance : 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

Natural environment raise ethical concerns : What is the focus of the theory? That is, what aspects of everyday life does the theory address? Another way to think about this is to consider what question(s) the theory is addressing?

How clearly organized is the prospectus : How clearly organized is the prospectus? How thorough has the writer been in investigating what he/she wants to study? Is the presentation of the writer's ideas convincing?

The purnell model for cultural competence : Describe the land or countryside where you live. Is it mountainous, swampy, etc.?

Emergency planning and community right to know act : Provide a descriptive example of a workplace emergency. Define how your company's Employee Assistance Program might respond to the emergency. How might your company respond to the trauma that is the result of an emergency on the job site?

User Account

All Pages