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Chemistry

02/25/24

What is the equillibrium

An empty steel container is filled with 0.0400 atm of HF. The system is allowed to reach equilibrium. If Kp = 2.76 for the reaction below, what is the equilibrium partial pressure of H₂? 2 HF (g) ⇌... more

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Chemistry

02/25/24

calculate delta H

Oxygen (O₂) is necessary for cellular respiration; it must be transported from the lungs to tissues through the bloodstream. However, O₂ is not very soluble in water. The Keq of oxygen dissolving... more

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Chemistry

02/25/24

Calulate initial pressure (in ATM)

Consider the formation of phosgene: CO(g) + Cl₂(g) ⇌ COCl₂(g) Into a sealed 1.50 L flask, chemist placed 3.00 × 10⁻² mol of phosgene gas (COCl₂) and heated it to 800.0 K. After the system reached... more

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Chemistry

02/25/24

In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction using the lowest whole-number ceofficients

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Chemistry

02/25/24

Chemistry Question

What volume, in milliliters, of 0.220 M NaOH should be added to a 0.140 L solution of 0.018 M glycine hydrochloride (PKa1 = 2.350, pKa2 = 9.778) to adjust the pH to 2.51?

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Chemistry

02/24/24

chemistry question

Calculate the pH for each of the cases in the titration of 35 mL of 0.130 M KOH(aq) with 0.130 M HBr(aq). I already know the first four I'm stuck on the last two.Before addition of any HBr:... more

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Chemistry

02/24/24

Determine the rate law for this reaction.

The rate of the reactionNO2(g) + CO(g)NO(g) + CO2(g)was determined in three experiments at 225°C. The results are given in the following table: Experiment [NO2]0 (M) [CO]0 (M) Initial Rate... more

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Chemistry

02/24/24

How many seconds will it take for the [C5H6] to be 0.110 M? The k for the reaction is 0.267 s–1.

Cyclopentadiene (C5H6) reacts with itself to form dicyclopentadiene (C10H12). A 0.880 M solution of C5H6 is monitored as a function of time as the reaction proceeds. A graph of ln[C5H6] versus time... more

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Chemistry

02/24/24

If the reaction is begun with an initial PH3 concentration of 0.95 M, what will be the concentration of PH3 after 36.50 s?

The rate of decomposition of PH3 was studied at 961.00 °C. The rate constant was found to be 0.0815 s–1.4PH3 --> P4 + 6H2If the reaction is begun with an initial PH3 concentration of 0.95 M,... more

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Chemistry

02/24/24

chemistry ions, isoelectronic series

Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4 species that are isoelectronic with Kr

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Chemistry

02/24/24

Molarity of Fe2+

Determine the molarity of Fe2+ ions in a solution prepared by mixing 56.1 mL of a 0.51 M FeCl2 solution and 40 mL of a 0.659 M Fe(NO3)3.

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Chemistry

02/24/24

Find the molarity of Na+ ions of a diluted solution.

Calculate the molarity of the Na+ ion in a solution resulting from the dilution of 25.1 mL of 5.12×10-3 M Na2S2O3 to a final volume of 264 mL.

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Chemistry

02/24/24

Colligative properties

If the boiling point constant of water is 0.51 C/M and the 400 g sample of aqueous solution whose boiling point is 101.1 C, how many grams of fructose (C5H10O5) are dissolved?

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Chemistry

02/23/24

Calculate the molarity of Mg2+ ions in a diluted solution.

Calculate the molarity (in mol/L) of the Mg2+ ion in a solution resulting from the dilution of 75.2 mL of 7.41×10-3 M Mg(NO2)2 to a final volume of 346 mL.

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Chemistry

02/23/24

Determine the molarity of Ni2+ ions.

Determine the molarity of Ni2+ ions in solution when 5.57×10-1 g of nickel(II) nitrate is added to enough water to prepare 3.58×102 mL of the solution.

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Chemistry Math Science

02/23/24

The activation energy Ea for a particular reaction is 42.2 kJ/mol. How much faster is the reaction at 343 K than at 321 K? (R = 8.314 J/mol • K)

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Chemistry Math Science

02/23/24

The activation energy for a particular reaction is 102 kJ/mol. If the rate constant is 1.35 × 10⁻⁴ s⁻¹ at 302 K, what is the rate constant at 273 K?

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Chemistry

02/23/24

What volume of carbon dioxide is produced if 8.68 L of oxygen is consumed during the combustion of the ethanol in the car's engine? Assume constant temperature and pressure.

C2H5OH(G)+3O2(g)=2CO2(g)+3H2O(g)

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Chemistry

02/22/24

Determine the molarity of sodium dichromate and the mole fraction of ammonium nitrite.

The mole fraction of an aqueous solution of sodium dichromate is 0.283. Calculate the molarity (in mol/L) of the sodium dichromate solution, if the density of the solution is 1.50 g... more

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Chemistry

02/22/24

The rate constant of a chemical reaction increased from 0.100 s−1 to 2.80 s−1 upon raising the temperature from 25.0 ∘C to 39.0 ∘C.

Part A Calculate the value of (1T2−1T1) where T1 is the initial temperature and T2 is the final temperature. Part B Calculate the value of ln(k1/k2) where k1 and k2 correspond to the rate constants... more

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Chemistry

02/22/24

At equilibrium, 10.2g CS2 is present. Calculate Kc.

At a certain temperature, 0.322 mol CH4 and 0.736 mol H2S are placed in a 2.00L container. CH4(g)+2H2S(g)-->CS2(g)+4H2(g)

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Chemistry

02/22/24

Calculate the amount of aluminum sulfate produced from 10.0 grams of aluminum

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Chemistry

02/21/24

How to solve this?

100.0 g of a ground mineral sample consisting of a mixture of MgCO₃ (magnesite) and BaCO₃ (witherite) was heated to completely convert the carbonates to their metal oxides. After the reaction 58.95... more

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Chemistry

02/21/24

What is the molarity of potassium fluoride?

An aqueous solution of potassium fluoride is prepared by dissolving 3.67 g of potassium fluoride in 8.03×102 g of water. The density of the solution is 1.24 g mL-1.Determine the molarity (in mol/L)... more

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Chemistry

02/21/24

Need help with chemistry problem.

the NaOH solution is standardized with KHP in this lab. If about 0.8 grams of KHP (MW=204.22 g/mol) is titrated with approximately 0.1 M NaOH what is the approximate volume of NaOH required to... more

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What is the equillibrium

calculate delta H

Calulate initial pressure (in ATM)

In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction using the lowest whole-number ceofficients

Chemistry Question

chemistry question

Determine the rate law for this reaction.

How many seconds will it take for the [C5H6] to be 0.110 M? The k for the reaction is 0.267 s–1.

If the reaction is begun with an initial PH3 concentration of 0.95 M, what will be the concentration of PH3 after 36.50 s?

chemistry ions, isoelectronic series

Molarity of Fe2+

Find the molarity of Na+ ions of a diluted solution.

Colligative properties

Calculate the molarity of Mg2+ ions in a diluted solution.

Determine the molarity of Ni2+ ions.

The activation energy Ea for a particular reaction is 42.2 kJ/mol. How much faster is the reaction at 343 K than at 321 K? (R = 8.314 J/mol • K)

The activation energy for a particular reaction is 102 kJ/mol. If the rate constant is 1.35 × 10⁻⁴ s⁻¹ at 302 K, what is the rate constant at 273 K?

What volume of carbon dioxide is produced if 8.68 L of oxygen is consumed during the combustion of the ethanol in the car's engine? Assume constant temperature and pressure.

Determine the molarity of sodium dichromate and the mole fraction of ammonium nitrite.

The rate constant of a chemical reaction increased from 0.100 s−1 to 2.80 s−1 upon raising the temperature from 25.0 ∘C to 39.0 ∘C.

At equilibrium, 10.2g CS2 is present. Calculate Kc.

Calculate the amount of aluminum sulfate produced from 10.0 grams of aluminum

How to solve this?

What is the molarity of potassium fluoride?

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