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Chemistry

03/17/24

For the reaction below, Kc = 4.60 × 10⁻⁶. Note Kc is sometimes called K. What is the equilibrium concentration of B if the reaction begins with 0.550 M A? A (g) ⇌ 3 B (g)

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Chemistry

03/17/24

bronsted-lowry model

Reaction: HO2C2O2H + H2O —> _________ + _____________Label the proton donor and the proton acceptor as acid or base. Predict the products and identify and label each conjugate acid-base pair.... more

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Chemistry

03/16/24

exothermic or endothermic chemical reactions

A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant... more

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Chemistry

03/16/24

Explain the equivalent bond lengths of the nitrite ion.

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Chemistry

03/16/24

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Chemistry

03/16/24

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Chemistry

03/15/24

Determine the pH for sodium hydrogen phosphate.

pKa = 12.38pKb = 6.80Concentration = 9.44×10-3 MIf the 5% approximation is valid, use the assumption to find the pH.

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Chemistry

03/14/24

Finding the concentration of an acid

25.0 mL of a solution of unknown concentration of fluorous acid is titrated by 20 mL of a 0.07 M solution of ammonium hydroxide. What is the concentration of the acid?

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Chemistry

03/14/24

finding the pH of a acid

0.0064 g of hydronitric acid is dissolved in 50 mL of water. What is the pH?

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Chemistry

03/14/24

volume required to bring solution to equivalence

What volume of 8.3 x 10-5 M yttrium (VI) hydroxide would be required to bring 55 mL of a 5.9 x 10-3 M sulfurous acid solution to equivalence?

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Chemistry

03/14/24

Determine the pH of the solution.

Determine the pH (to two decimal places) of the solution that is produced by mixing 1.21 mL of 3.65×10-3 M HCl with 69.3 mL of 9.43×10-3 M KH.

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Chemistry

03/14/24

Determine the pOH of the solution.

Determine the pOH (to two decimal places) of the solution that is produced by mixing 54.3 mL of 2.54×10-3 M Na2O with 923 mL of 7.45×10-1 M MgO.

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Chemistry

03/14/24

Enthalpy and Hess's law question

Determine the enthalpy of reaction for 2CH₄(g) → C₂H₄(g) + 2H₂(g) using the equations: 2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l) ∆H° = −3120.8 kJ/mol CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) ∆H° = −890.3... more

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Chemistry

03/14/24

How to solve this?

Consider a gas cylinder containing 0.100 moles of an ideal gas in a volume of 3.300 L with a pressure of 1.00 atm. The cylinder is surrounded by a constant temperature bath at 400.0 K. With a... more

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Chemistry

03/14/24

Determine the mass of Na3Ag(S2O3)2 produced if 0.275g of AgBr is removed

Photographic film contain silver, bromide and gelatin. Once exposed, some of the silver, bromide, decomposes, producing fine grains of silver. The unexposed silver bromide is removed by treating... more

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Chemistry

03/14/24

Calculate the theoretical yield of iron(lll) oxide (Fe2O3)

Iron reacts with oxygen at high temperatures to form Iron(lll) oxide.Suppose 24.3g of iron (Fe) is reacted with 29.1 g of oxygen (O2)4Fe(s)+3O2(G) - 2Fe2O3(S)Select the limiting reactant the... more

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Chemistry

03/14/24

Enthalpy calculation

what is the change in enthalpy when 2.3 moles of magnesium is reacted in the following equation: 2Mg(s) + O2(g) --> 2MgO(s) delta H = -1204 kJ

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Chemistry

03/14/24

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction

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Chemistry

03/14/24

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction

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Chemistry

03/14/24

You split in half a solution of 2.0 grams sodium acetate and 10 mL 3.0 M acetic acid that was later added with 50 mL water (total 60 mL). Find the pH

You split in half a solution of 2.0 grams sodium acetate and 10 mL 3.0 M acetic acid that was later added with 50 mL water (total 60 mL). One solution will be added with 1 mL of 6.0 M HCl and the... more

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Chemistry

03/14/24

A buffer is made by mixing 2.0 grams of sodium acetate and 10 mL of 3.0 M acetic acid. Then 50 mL of water is added to the mixture. Answer the questions below.

A buffer is made by mixing 2.0 grams of sodium acetate and 10 mL of 3.0 M acetic acid. Then 50 mL of water is added to the mixture. Write the equilibrium expression Calculate the molarity of the... more

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Chemistry

03/14/24

Calculate the molarity of the acid and the conjugate base, and use the Henderson-Hasselbalch equation

A buffer is made by mixing 2.0 grams of sodium acetate and 10 mL of 3.0 M acetic acid. Then 50 mL of water is added to the mixture. Calculate the molarity of the acid and the conjugate base. Find... more

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Chemistry

03/13/24

O2 Change Moles

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Chemistry

03/13/24

Calculate how many grams of O29(g) can be produced from heating 25.7 g KCIO3(s)

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Chemistry

03/12/24

How do I find the OH- of this acidic solution?

The pOH of an acidic solution is 9.37. What is [OH⁻]?

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For the reaction below, Kc = 4.60 × 10⁻⁶. Note Kc is sometimes called K. What is the equilibrium concentration of B if the reaction begins with 0.550 M A? A (g) ⇌ 3 B (g)

bronsted-lowry model

exothermic or endothermic chemical reactions

Explain the equivalent bond lengths of the nitrite ion.

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Ocean Credit loan CusTomeR Number)+91) 7225956374//(call)//-/// call(/!➐➑➍➐⓿➑➏➒➊➑!()((call meOcean Credit

Determine the pH for sodium hydrogen phosphate.

Finding the concentration of an acid

finding the pH of a acid

volume required to bring solution to equivalence

Determine the pH of the solution.

Determine the pOH of the solution.

Enthalpy and Hess's law question

How to solve this?

Determine the mass of Na3Ag(S2O3)2 produced if 0.275g of AgBr is removed

Calculate the theoretical yield of iron(lll) oxide (Fe2O3)

Enthalpy calculation

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction

If 0.178 mol of zinc reacts with a excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction

You split in half a solution of 2.0 grams sodium acetate and 10 mL 3.0 M acetic acid that was later added with 50 mL water (total 60 mL). Find the pH

A buffer is made by mixing 2.0 grams of sodium acetate and 10 mL of 3.0 M acetic acid. Then 50 mL of water is added to the mixture. Answer the questions below.

Calculate the molarity of the acid and the conjugate base, and use the Henderson-Hasselbalch equation

O2 Change Moles

Calculate how many grams of O29(g) can be produced from heating 25.7 g KCIO3(s)

How do I find the OH- of this acidic solution?

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