J.R. S.

04/19/21

Electrochemical Cells: Line Notation

Write the cell notation for an electrochemical cell consisting of an anode where Sn (s) is oxidized to Sn2+ (aq) and a cathode where Cu2+ (aq) is reduced to Cu (s) . Assume all aqueous solutions... more

Follows • 2

Answers •1

Chemistry

04/19/21

Electrochemical Cells: Line Notation

Write the cell notation for an electrochemical cell consisting of an anode where Al (s) is oxidized to Al3+ (aq) and a cathode where Cu2+ (aq) is reduced to Cu (s) . Assume all aqueous solutions... more

Follows • 2

Answers •1

Chemistry

04/19/21

Faraday’s Law: Calculate Mass Deposited

How many grams of copper metal will be deposited from a solution that contains Cu^2+ ions if a current of 0.586 A is applied for 30.7 minutes. ______grams

Follows • 2

Answers •1

Chemistry

04/19/21

What is ∆G° for a redox reaction where 6 moles of electrons are transferred and E° =-4.20 V? (F = 96,500 J/(V･mol))

Follows • 2

Answers •1

Chemistry

04/19/21

Determine E° for the half-reaction Fe³⁺(aq) + e⁻ → Fe²⁺(aq).

Fe3+ + H2 > 2H+ + Fe2+E+ +0.77V

Follows • 2

Answers •1

Chemistry

04/19/21

Consider the following half reaction: Na⁺(aq) + e⁻ → Na(s). For this reaction, E°(red) = -2.7 V. If this reaction is tripled so that 3 Na⁺ ions are reduced to 3 Na atoms, what is the new E°(red)?

Follows • 2

Answers •1

Chemistry Acids Bases And Salts Insoluble Salts

04/19/21

What is the molecular and ionic equation for the reaction between copper(II) oxide and dilute sulphuric acid.

Follows • 2

Answers •1

Chemistry

04/19/21

Determine the freezing point depression of 2 kg of water when 2 mol salt is added to it. The kf of water is 1.86 degrees C/m. Show all your work.

Follows • 2

Answers •1

Chemistry

04/19/21

what is the volume of sulfuric acid in a 400 ml water of 0.05 mol/L solution

I want to prepare a solution on 400ml of 0.05 mol/L of standardized sulfuric acid, how much volume of sulfuric acid is required for preparation of standardized H2SO4 (0.05 mol/L). I have the... more

Follows • 2

Answers •1

Chemistry

04/19/21

Suppose you need to prepare 135.9 mL of a 0.299 M aqueous solution of NaCl. What mass, in grams, of NaCl do you need to use to make the solution?

Follows • 2

Answers •2

Chemistry

04/19/21

Are my answers to these Chemistry problems correct? (My answer is in bold.)

For the following questions, use the following: A gas grill burns Propane (C3H8) in the presence of more than sufficient Oxygen (O2). This reaction produces water vapor and Carbon Dioxide. The... more

Follows • 2

Answers •1

Chemistry

04/19/21

Can someone please help me with these Chemistry questions?

For the following questions, use the following: Chlorine is used to bleach cloth. Excess Chlorine is destroyed by its reaction with Sodium Thiosulfate (Na2S2O3) according to the unbalanced equation... more

Follows • 2

Answers •1

Chemistry

04/19/21

For which of the following processes would ΔS have a negative value?

For which of the following processes would ΔS have a negative value? I. 2 Fe2O3(s) → 4 Fe(s) + 3 O2(g)II. Mg2+ (aq) + 2 OH ̄ (aq) → Mg(OH)2(s)III. 2NO2 (g) → N2O4 (g)I,II, and IIIII and III onlyI... more

Follows • 2

Answers •1

Chemistry

04/19/21

What is the equilibrium constant for the following reaction at 25°C?

Mg(s) + Zn2+(aq) ⇌ Mg2+(aq) + Zn(s)I used the formula: K= enFE/RT and I got 6.28 x 1054 the homework says that only the exponent is right but not 6.28. Mg ecell= -2.38Zn ecell= -0.76

Follows • 2

Answers •1

Chemistry

04/19/21

Can someone please check-over these Chemistry problems? (My answer is in bold.)

*An empirical formula is a molecular formula _______.A. without coefficientsB. without subscriptsC. in scientific notationD. reduced to the ratio of atoms involvedE. None of the Above*Which of the... more

Follows • 2

Answers •1

Chemistry Organic Chemistry

04/18/21

1. Calculate the hydronium ion concentration, [H3O+] , for a solution with a pH of 7.48 . QUESTION #2 : What is the pH of a bleach solution that has a [OH−]=2.8×10−3 M?

I am having trouble with these two questions can someone please furthermore explain them.

Follows • 2

Answers •1

Chemistry

04/18/21

Determine Rate Law: Initial Rates

The following initial rate data are for the oxidation of nitrogen monoxide by oxygen at 25 oC:2 NO + O22 NO2 Experiment [NO]o, M [O2]o, M Initial Rate, M... more

Follows • 2

Answers •1

Chemistry

04/18/21

Graphical Method: Order and k from Slope and Intercept

In a study of the gas phase decomposition of hydrogen peroxide at 400 °CH2O2(g)H2O(g) + ½ O2(g)the concentration of H2O2 was followed as a function of time.It was found that a graph... more

Follows • 2

Answers •1

Chemistry

04/18/21

Ksp: Calculate from Solubility (mol/L)

A student measures the CO32- concentration in a saturated aqueous solution of lead carbonate to be 4.01×10-7 M.Based on her data, the solubility product constant for lead carbonate is _____.

Follows • 2

Answers •1

Chemistry

04/18/21

ΔG° = ΔH° - TΔS°

For the reaction2 NO(g) + O2(g) 2 NO2(g)G° = -64.1 kJ and S° = -146.5 J/K at 342 K and 1 atm.This reaction is (reactant, product) _____ favored under standard conditions at 342 K.The standard... more

Follows • 2

Answers •1

Chemistry

04/18/21

ΔG° = ΔH° - TΔS°

For the reaction4HCl(g) + O2(g)2H2O(g) + 2Cl2(g)H° = -114.4 kJ and S° = -128.9 J/KThe standard free energy change for the reaction of 1.62 moles of HCl(g) at 261 K, 1 atm would be ___ kJ.This... more

Follows • 2

Answers •1

Chemistry

04/18/21

What is the conjugate acid of S2- and NH3

Follows • 2

Answers •1

Chemistry

04/18/21

Enthalpy of formation

Given the following thermochemical equations:4B(s) + 3O2(g) → 2B2O3(s) ΔH = –2509.1 kJ2H2(g) + O2(g) → 2H2O(l) ΔH = –571.70 kJB2H6(g) + 3O2(g) → B2O3(s) + 3H2O(l) ΔH = –2147.5 kJCalculate the... more

Follows • 2

Answers •1

Science Chemistry

04/18/21

as pressure increases, the solubility of a gas

A)Increases B)DecreasesC)Pressure has no effect on the solubility of a gas

Follows • 2

Answers •1

Chemistry Ap Chemistry

04/18/21

Identify a substance that would alter the pH of a solution, but that the Arrhenius’ model would fail to identify appropriately. Explain why you selected this substance.

Follows • 2

Answers •1

Electrochemical Cells: Line Notation

Electrochemical Cells: Line Notation

Faraday’s Law: Calculate Mass Deposited

What is ∆G° for a redox reaction where 6 moles of electrons are transferred and E° =-4.20 V? (F = 96,500 J/(V･mol))

Determine E° for the half-reaction Fe³⁺(aq) + e⁻ → Fe²⁺(aq).

Consider the following half reaction: Na⁺(aq) + e⁻ → Na(s). For this reaction, E°(red) = -2.7 V. If this reaction is tripled so that 3 Na⁺ ions are reduced to 3 Na atoms, what is the new E°(red)?

What is the molecular and ionic equation for the reaction between copper(II) oxide and dilute sulphuric acid.

Determine the freezing point depression of 2 kg of water when 2 mol salt is added to it. The kf of water is 1.86 degrees C/m. Show all your work.

what is the volume of sulfuric acid in a 400 ml water of 0.05 mol/L solution

Suppose you need to prepare 135.9 mL of a 0.299 M aqueous solution of NaCl. What mass, in grams, of NaCl do you need to use to make the solution?

Are my answers to these Chemistry problems correct? (My answer is in bold.)

Can someone please help me with these Chemistry questions?

For which of the following processes would ΔS have a negative value?

What is the equilibrium constant for the following reaction at 25°C?

Can someone please check-over these Chemistry problems? (My answer is in bold.)

1. Calculate the hydronium ion concentration, [H3O+] , for a solution with a pH of 7.48 . QUESTION #2 : What is the pH of a bleach solution that has a [OH−]=2.8×10−3 M?

Determine Rate Law: Initial Rates

Graphical Method: Order and k from Slope and Intercept

Ksp: Calculate from Solubility (mol/L)

ΔG° = ΔH° - TΔS°

ΔG° = ΔH° - TΔS°

What is the conjugate acid of S2- and NH3

Enthalpy of formation

as pressure increases, the solubility of a gas

Identify a substance that would alter the pH of a solution, but that the Arrhenius’ model would fail to identify appropriately. Explain why you selected this substance.

Still looking for help? Get the right answer, fast.

OR

J.R. S.

IXL

Rosetta Stone

Education.com

TPT

Vocabulary.com

ABCya

SpanishDictionary.com

Inglés.com

Emmersion