04/13/21

Complete and balance the following half-reaction in basic solution
Cr(OH)3(s) -> CrO4^2-(aq)
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04/13/21

What is the maximum amount of work that is possible for an electrochemical cell where E = 1.17 V and n = 2? (F = 96,500 J/(V･mol))
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04/13/21

For the galvanic (voltaic) cell Cd²⁺(aq) + Fe(s) ⟶ Cd(s) + Fe²⁺(aq) (E° = 0.0400 V), what is the ratio [Fe²⁺]/[Cd²⁺] when E = 0.006 V? Assume T is 298 K
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04/13/21

Please answer this

Use the following choices to classify each reaction given below (More than one choice may apply).a. Oxidation–reductionb. Acid–basec. PrecipitationNa2SO4(aq) + Pb(NO3)2(aq) → PbSO4(s) + 2NaNO3(aq)
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04/13/21

pH of a NaOH solution
The pH of a NaOH solution is 13.29. What will be the pH of the solution when diluted to one million times?
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04/13/21

HEAT OF VAPORIZATION

HEAT OF VAPORIZATION Q=mx H, If the heatyaporization of isopropyl alcohol is measured at 702 joules/gram and it requires 596,700 joules of energy to vaporize a sample, how many grams of isopropyl... more
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04/13/21

For q= m ●c ● Δ T : identify each variables by name & the units associated with it.

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04/13/21

Copper has a specific heat of 0.385 J/(g×°C). A piece of copper absorbs 5000 J of energy and undergoes a temperature change from 100 °C to 200 °C. What is the mass of the piece of copper?

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04/13/21

Which of these molecules contain polar bonds, and which contain nonpolar bonds?

Water, Ozone, Carbon Dioxide, oxygen
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04/13/21

How many grams of magnesium would you need to replace all of the copper in 50 mL of a .5 M copper (ii) sulfate solution?
show work / reasoning for the solution
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04/13/21

Calculate the standard entropy change for the reaction.
PCl5(g)      PCl3(g) + Cl2(g) Compound S° (J mol-1 K-1) PCl5 (g) 352.7 PCl3 (g) 311.7 Cl2 (g) 223.0
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04/13/21

How many grams of copper metal can be deposited from Cu²⁺(aq) when a current of 2.50 A is run for 4.65 h? (F = 96,500 C/mol)
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04/13/21

What is the number of coulombs required to electrolyze Au⁺(aq) to produce 1.30 mol Au? (F = 96,500C/mol)
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04/13/21

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)?
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04/13/21

Determine E° for the half-reaction In³⁺(aq) + 3 e⁻ → In(s).
2In(s) + 6H+(aq) -> 2In^3+(aq) + 3H2(g)E = +0.32 V
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04/13/21

Complete and balance the following half-reaction in acidic solution
NO3^-(aq) -> NO(g)
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04/13/21

Complete and balance the following half-reaction in acidic solution
N2(g) -> NH4^+(aq)
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04/13/21

What is the frequency of a photon with the energy of 4.56 x 10 -19 J
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04/12/21

A solution of 0.162 M NaOH is used to titrate 25.0 mL of a solution of H2SO4. If 32.8 mL of the NaOH solution is required to reach the endpoint, what is the molarity of the H2SO4 solution?
Please include the detail such as steps.Thank you
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04/12/21

A 15.0 mL sample of 0.50 M HCl is added to a 100. mL sample of 0.478 M HNO2 (Ka = 4.0 x 10-4). What is the concentration of NO2- ions at equilibrium?
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04/12/21

Please answer this
Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases.An aqueous... more
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04/12/21

Complete and write the balanced molecular equation for the following: An aqueous solution of magnesium chloride is added to an aqueous solution of silver nitrate.
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04/12/21

If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g×°C).

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04/12/21

Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of gold from 22 °C to 85 °C?

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04/12/21

chemistry help!
How many grams H3FSi does it contain?How many H3FSi molecules does it contain?
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