A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH3)4]^{2+}. If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.075 V at 298 K.
Half reaction of Cu = .337 V
Half reaction of H = .000 V

Based on the cell potential, what is the concentration of Cu^{2+} in this solution?

[Cu2+]____ with units


PLEASE HELP ME!!

Using the following reduction potentials:

I₂(s) + 2e^- <---> 2I^-(aq) E⁰ = 0.535 V

I₂ (aq) +2e^- <---> 2I^-(aq) E⁰ = 0.620 V

I₃^-(aq) + 2e^- <---> 3I^-(aq) E⁰ = 0.535 V

a) Calculate the equilibrium constant for I₂(aq) + I^-(aq) <---> I₃^-(aq)

b) Calculate the equilibrium constant for I₂(s) + I^-(aq) <---> I₃^-(aq)

c) Calculate the solubility (g/L) of I₂(s) in water.

A voltaic cell utilizes the following reaction and operates at 298 K. 3 Ce4+(aq) + Cr(s) 3 Ce3+(aq) + Cr3+(aq)

(a) What is the emf of this cell under standard conditions? V

(b) What is the emf of this cell when [Ce4+] = 2.0 M, [Ce3+] = 0.014 M, and [Cr3+] = 0.011 M? V

(c) What is the emf of the cell when [Ce4+] = 0.56 M, [Ce3+] = 0.82 M, and [Cr3+] = 1.3 M? V

Envoi was formed on January 1, 2016, when Envoi issued common shares for $500,000. Early in January 2016, Envoi made the following cash payments:

$250,000 for equipment

$200,000 for inventory (four cars at $50,000 each)

$10,000 for 2016 rent on a store building

In February 2016, Envoi purchased six cars for inventory on account. Cost of this inventory was $260,000 ($43,333.33 each). Before year-end, Envoi paid $208,000 of this debt. Envoi uses the FIFO method to account for inventory.

During 2016, Envoi sold eight vintage autos for a total of $600,000. Before year-end, Envoi collected 80% of this amount.

The business employs three people. The combined annual payroll is $55,000, of which Envoi owes $4,000 at year end. At the end of the year, Envoi paid income tax of $10,000.

Late in 2016, Envoi declared and paid cash dividends of $11,000.

For equipment, Envoi uses the straight-line depreciation method over five years with zero residual value.

Requirements

Prepare Envoi’s income statement for the year ended December 31, 2016. Use the single-step format, with all revenues listed together and all expenses listed together.

Prepare Envoi’s balance sheet at December 31, 2016.

Prepare Envoi’s statement of cash flows for the year ended December 31, 2016. Format cash flows from operating activities by using the indirect method.

Comment on the business performance based on the statement of cash flows.

Klaben Motors Inc., was formed on January 1, 2016. The following transactions occurred during 2016: On January 1, 2016, Klaben issued its common stock for $510,000. Early in January, Klaben made the following payments: a. $220,000 for equipment b. $243,000 for inventory (9 cars @ $27,000 each) c. $25,000 for 2016 rent on a store building. In February, Klaben purchased 3 cars for inventory on account. Cost for this inventory was $117,000 ($39,000 each). Before year-end, Klaben paid $70,200 of this debt. The company uses the first-in, first-out (FIFO) method to account for inventory. During 2016, Klaben sold 11 autos for a total of $649,000. Before year-end, it had collected 80% of this amount. The business employs 2 people. The combined annual payroll is $151,000, of which Klaben owes $1,000 at year-end. At the end of the year, Klaben paid income tax of $22,000. Late in 2016, Klaben declared and paid cash dividends of $11,000. For equipment, Klaben uses the straight-line depreciation method, over five years, with residual value. Requirements: 1. Prepare Klaben’s income statement for the year ended December 31, 2016. Use the single-step format, with all the revenues listed together and all expenses listed together. 2. Prepare Klaben’s balance sheet at December 31, 2016. 3. Prepare Klaben’s statement of cash flows for the year ended December 31, 2016. Format cash flows from operating activities by using the direct method.

Klaben Motors Inc., was formed on January 1, 2016. The following transactions occurred during 2016: On January 1, 2016, Klaben issued its common stock for $510,000. Early in January, Klaben made the following payments: a. $220,000 for equipment b. $243,000 for inventory (9 cars @ $27,000 each) c. $25,000 for 2016 rent on a store building. In February, Klaben purchased 3 cars for inventory on account. Cost for this inventory was $117,000 ($39,000 each). Before year-end, Klaben paid $70,200 of this debt. The company uses the first-in, first-out (FIFO) method to account for inventory. During 2016, Klaben sold 11 autos for a total of $649,000. Before year-end, it had collected 80% of this amount. The business employs 2 people. The combined annual payroll is $151,000, of which Klaben owes $1,000 at year-end. At the end of the year, Klaben paid income tax of $22,000. Late in 2016, Klaben declared and paid cash dividends of $11,000. For equipment, Klaben uses the straight-line depreciation method, over five years, with residual value. Requirements: 1. Prepare Klaben’s income statement for the year ended December 31, 2016. Use the single-step format, with all the revenues listed together and all expenses listed together. 2. Prepare Klaben’s balance sheet at December 31, 2016. 3. Prepare Klaben’s statement of cash flows for the year ended December 31, 2016. Format cash flows from operating activities by using the direct method.

Klaben Motors Inc., was formed on January 1, 2016. The following transactions occurred during 2016: On January 1, 2016, Klaben issued its common stock for $510,000. Early in January, Klaben made the following payments: a. $220,000 for equipment b. $243,000 for inventory (9 cars @ $27,000 each) c. $25,000 for 2016 rent on a store building. In February, Klaben purchased 3 cars for inventory on account. Cost for this inventory was $117,000 ($39,000 each). Before year-end, Klaben paid $70,200 of this debt. The company uses the first-in, first-out (FIFO) method to account for inventory. During 2016, Klaben sold 11 autos for a total of $649,000. Before year-end, it had collected 80% of this amount. The business employs 2 people. The combined annual payroll is $151,000, of which Klaben owes $1,000 at year-end. At the end of the year, Klaben paid income tax of $22,000. Late in 2016, Klaben declared and paid cash dividends of $11,000. For equipment, Klaben uses the straight-line depreciation method, over five years, with residual value. Requirements: 1. Prepare Klaben’s income statement for the year ended December 31, 2016. Use the single-step format, with all the revenues listed together and all expenses listed together. 2. Prepare Klaben’s balance sheet at December 31, 2016. 3. Prepare Klaben’s statement of cash flows for the year ended December 31, 2016. Format cash flows from operating activities by using the indirect method.