J.R. S.

Chemistry Biochemistry Organic Chemistry

04/15/21

can someone help me please differentiate what is soluble from slightly soluble.

Since searching the net makes me even more confused.

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Chemistry Acid Base titration

04/15/21

What is the concentration/pH of ammonia after titration?

40.00 mL of NH3(aq) are titrated with 25.00 mL of 0.50 mol/L HCl(aq). Kb = 1.8x10-5a) What is the concentration of the ammonia solution? What is the pH at the beginning?b) What is the pH at the... more

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Math Chemistry

04/15/21

Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: H2SO4(l) → SO3(g) + H2O(g)

Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: H2SO4(l) → SO3(g) + H2O(g) H2S(g) + 2O2(g) → H2SO4(l) ΔH = -235.5 kJ/mol H2S(g) + 2O2(g) → SO3(g)... more

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Math Chemistry

04/15/21

Calculate the heat of reaction (kJ/mol) for the following reaction from the listed standard enthalpies of formation:

Calculate the heat of reaction (kJ/mol) for the following reaction from the listed standard enthalpies of formation: P4O10(s) + 6 H2O(l) → 4 H3PO4(aq) ΔHf° of P4O10(s) = -2984.0 kJ/molΔHf° of... more

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Math Chemistry

04/15/21

Using the given standard enthalpies of formation and the heat of reaction, calculate the standard heat of formation of C2H2(g).

Using the given standard enthalpies of formation and the heat of reaction, calculate the standard heat of formation of C2H2(g). CaC2(s) + 2 H2O(l) → Ca(OH)2(s) + C2H2(g) ΔHrxn = -127.2... more

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Chemistry Ap Chemistry

04/15/21

Barium Acetate: For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.

For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.Barium Acetate

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Chemistry Ap Chemistry

04/15/21

Aluminum Sulfate: For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.

For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.Aluminum Sulfate

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Chemistry

04/15/21

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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Chemistry

04/15/21

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))

225,810 J = 226 kJ is incorrect

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Chemistry

04/15/21

Consider two half-reactions: X → X²⁺ + 2e⁻, E°(cell) = -2 V, Y → Y⁺ + e⁻, E°(cell) = -2 V. Which of these half-reaction cells has a greater ∆G°?

X Y (my guess)They have the same DGNot enough info to tell

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Chemistry

04/15/21

What is the standard electrode potential for the reaction 2 Cr + 3 Pb²⁺ → 3 Pb + 2 Cr³⁺?

Pb^2+(aq) + 2e^- -> Pb(s) // -0.13Cr^3+(aq) + 3e^- -> Cr(s) // -0.74

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Chemistry

04/15/21

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 (this is not the answer)

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Chemistry

04/15/21

A compound is formed when 0.3 moles of barium combine with a 0.6 moles of chlorine. What is the empirical formula for this compound?

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Chemistry

04/14/21

Which of the following is not a transition metal?

Which of the following is not a transition metal?1.co2.zn3.ti4.nb5.tc

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Chemistry

04/14/21

Help me with this question

1. Given the following experimental data, find the rate law and the rate constant for the reaction NO (g) + NO2 (g) + O2 (g)  N2O5 (g) Run [NO]o, M ... more

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Chemistry

04/14/21

Please help me solve this chemistry question!

2 A + 2 B → C + D The following data about the reaction above were obtained from three experiments:Experiment: 1 [A]: 0.60[B]: 0.15Initial Rate of Formation of C (mole. liter-1min-1 ):... more

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Science Chemistry

04/14/21

What is the empirical formula of a compound that contains 10.52 grams of nickel, 4.38 grams of carbon, 5.10 grams of nitrogen?

An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more

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Science Chemistry

04/14/21

What is the empirical formula of monosodium glutamate (MSG) which contains 35.50% C, 4.77% H, 8.29% N, 13.6% Na, and 37.90% O?

An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more

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Chemistry Thermodynamics

04/14/21

The following cell has a potential of 0.10 V at 25oC. What is the pH of the solution in the cathode compartment?

Ni(s) | Ni2+(aq) (1.0 M) || H+ (? M) | H2(g) (1.0 atm) | Pt(s)

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Chemistry

04/14/21

The 𝐾a of a monoprotic weak acid is 0.00353. What is the percent ionization of a 0.108 M solution of this acid?

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Chemistry

04/14/21

When 2.00 mol of H2(g) forms in the following reaction, ΔH = 572 kJ. 2 H2O(l) → 2 H2(g) + O2(g) What is the maximum wavelength of light (in nm) that can convert H2O into H2(g)?

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Chemistry

04/14/21

Greatest lattice energy

In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions), which affects lattice energy (a measure of the attractive force... more

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Chemistry

04/14/21

Write the net ionic solution for 3fecl2+2(NH4)3PO4=Fe3(PO4)2+6NH4CL

Molecular equation for 3fecl2+2(NH4)3PO4=Fe3(PO4)2+6NH4CL net ionic equation

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Chemistry Chem

04/13/21

Why when NH4Cl dissolves in liquid ammonia solution becomes acidic?

When NH4Cl dissolves in:2NH3 ⇌ NH4+ + NH2-shouldn't equilibrium shift to the left since concentration of NH4+ increases resulting in solution becoming basic instead?

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Chemistry

04/13/21

Complete and balance the following half-reaction in basic solution

SO3^2-(aq) -> SO4^2-(aq)

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Answers •1

can someone help me please differentiate what is soluble from slightly soluble.

What is the concentration/pH of ammonia after titration?

Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: H2SO4(l) → SO3(g) + H2O(g)

Calculate the heat of reaction (kJ/mol) for the following reaction from the listed standard enthalpies of formation:

Using the given standard enthalpies of formation and the heat of reaction, calculate the standard heat of formation of C2H2(g).

Barium Acetate: For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.

Aluminum Sulfate: For the salt given below, determine an acid & base that can react to produce the salt and write a balanced neutralization reaction using that acid & base.

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

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))

Consider two half-reactions: X → X²⁺ + 2e⁻, E°(cell) = -2 V, Y → Y⁺ + e⁻, E°(cell) = -2 V. Which of these half-reaction cells has a greater ∆G°?

What is the standard electrode potential for the reaction 2 Cr + 3 Pb²⁺ → 3 Pb + 2 Cr³⁺?

Determine E° for the half-reaction In³⁺(aq) + 3 e⁻ → In(s).

A compound is formed when 0.3 moles of barium combine with a 0.6 moles of chlorine. What is the empirical formula for this compound?

Which of the following is not a transition metal?

Help me with this question

Please help me solve this chemistry question!

What is the empirical formula of a compound that contains 10.52 grams of nickel, 4.38 grams of carbon, 5.10 grams of nitrogen?

What is the empirical formula of monosodium glutamate (MSG) which contains 35.50% C, 4.77% H, 8.29% N, 13.6% Na, and 37.90% O?

The following cell has a potential of 0.10 V at 25oC. What is the pH of the solution in the cathode compartment?

The 𝐾a of a monoprotic weak acid is 0.00353. What is the percent ionization of a 0.108 M solution of this acid?

When 2.00 mol of H2(g) forms in the following reaction, ΔH = 572 kJ. 2 H2O(l) → 2 H2(g) + O2(g) What is the maximum wavelength of light (in nm) that can convert H2O into H2(g)?

Greatest lattice energy

Write the net ionic solution for 3fecl2+2(NH4)3PO4=Fe3(PO4)2+6NH4CL

Why when NH4Cl dissolves in liquid ammonia solution becomes acidic?

Complete and balance the following half-reaction in basic solution

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