J.R. S.

10/19/22

Equilibrium: extent of chemical reactions

hey,I cant figure out how to solve this, anyone who can help me with a youtube video?At a particular temperature, Kc = 1.6x10-2 for 2H2S -><- 2H2 + S2Calculate Kc for the following... more

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Chemistry

10/19/22

For the following reaction, 24.6 grams of nitrogen monoxide are allowed to react with 1.42 grams of hydrogen gas.

nitrogen monoxide + hydrogen -> nitrogen + waterWhat is the maximum amount of nitrogen gas that can be formed?Mass = gWhat is the FORMULA for the limiting reactant?What amount of the excess... more

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Chemistry

10/19/22

For the reaction 2 SO₃(g) ⇌ 2 SO₂(g) + O₂(g) Kp = 2.62 × 10⁻⁶ at 400 °C. A 1.50 L vessel at 400 °C is filled with SO₃(g) at an initial pressure of 3.00 atm and allowed to come to equilibrium...

For the reaction 2 SO₃(g) ⇌ 2 SO₂(g) + O₂(g) Kp = 2.62 × 10⁻⁶ at 400 °C. A 1.50 L vessel at 400 °C is filled with SO₃(g) at an initial pressure of 3.00 atm and allowed to come to equilibrium. What... more

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Chemistry

10/19/22

What mass of simple sugar glucose is produced by the reaction of 5.3g of carbon dioxide

Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon dioxide CO2chemically react to form the simple sugar... more

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Chemistry

10/18/22

Analytical Chemistry Question

A solution contains 0.0450 M Co2+ and 0.0200 M Ni2+. What is the concentration of the first cation when the second cation starts to precipitate as Na2CO3 is added to the solution?

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Chemistry

10/18/22

Calculate the total number of calories produced in the reaction.

B. ΔHsolution for neutralization of HCl(aq) and NaOH(aq):Volume of HCl: 0.0500 LVolume of NaOH: 0.0500 LVolume total: 0.1000 LMolarity of HCl: 2.00 MMolarity of NaOH: 2.00 MΔT for reaction B: 13.0 °C

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Science Chemistry

10/18/22

What is the pH?

What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.040 mol of NaOH were added?

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Science Chemistry

10/18/22

What is the pH?

What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.050 mol of HCl were added?

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Chemistry

10/18/22

Chemistry Help Please

Calculate the volume of 0.2M NaOH required to bring the pH of 20 mL of 5% acetic acid solution to 4.74, which is the pKa of acetic acid.

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Chemistry

10/18/22

Calculating the pH of a buffer solution

Calculate the pH of a buffer solution prepared by mixing 30 mL of 5% acetic acid with 10 mL of 0.5 M NaOH.

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Chemistry

10/18/22

Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water

Suppose 24. g of hydrobromic acid is mixed with 22.1 g of sodium hydroxide. Calculate the maximum mass of sodium bromide that could be produced by the chemical reaction. Round your answer to ... more

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Chemistry

10/17/22

EQUILIBRIUM QUESTION

CO2+H2=CO+H2OCO2 H2 = CO H2O0.5M 0.5M 0.2M 0.2MTEMP=1200K KC=1.44 VOLUME=1.0DM3CALCULATE MOLES AT EQUILIBRIUM.

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Chemistry

10/17/22

Chemistry Problem

In a constant‑pressure calorimeter, 55.0 mL of 0.350 M Ba(OH)2 was added to 55.0 mL of 0.700 M HCl.The reaction caused the temperature of the solution to rise from 23.16 ∘C to 27.93 ∘C. If the... more

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Chemistry

10/17/22

Chemistry Problem

During an experiment, a student adds 0.601 g of calcium metal to 150.0 mL of 1.65 M HCl. The student observes a temperature increase of 13.0 °C for the solution. Assuming the solution's final... more

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Chemistry

10/16/22

a particular beer is 6.50% ethanol by volume. If a single beer contains 750 ml of beer, what mass in g of ethanol is present in the bottle? The density of ethanol is 0.789 g ethanol/mL.

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Chemistry

10/16/22

What is the molarity (M) of a 2.0% (w/v) NaCl solution?

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Chemistry

10/16/22

Final Concentration

If 3.2 mL of 0.200 M Fe3+ solution is mixed with 2 mL of 0.00200M SCN- solution, and HNO3 is used to bring the final volume to 10 mL. What is the final concentration in M of the Fe3+ ion in the 10... more

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Chemistry

10/16/22

Im not sure how to start answering this question and what equations to use

What is the escape rate (molecules/s) of CO2 from the ballon? Show complete calculation for your "wait" time, including moles and molecules of CO2 lost.

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Science Chemistry

10/16/22

What is the value for pH?

What is the pH of a 0.710 M solution of NaCN (Ka of HCN is 4.9 × 10⁻¹⁰)?

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Science Chemistry

10/16/22

HC₂H₃O₂(aq) + NaOH(aq) →

Complete the balanced molecular reaction for the following weak acid with a strong base. Be sure to include the proper phases for all species within the reaction.HC₂H₃O₂(aq) + NaOH(aq) →

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Science Chemistry

10/16/22

NaClO(aq) + H₂SO₄(aq) →

Complete the balanced molecular reaction for the following weak base with a strong acid:NaClO(aq) + H₂SO₄(aq) →

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Chemistry

10/16/22

If you have a solution that is 0.4000 M LiNO2, 0.8000 M HNO2, and 0.0800 M KOH, what is the resulting pH?

If you have a solution that is 0.4000 M LiNO2, 0.8000 M HNO2, and 0.0800 M KOH, what is the resulting pH? (HNO2 Ka = 4.5 x 10-4)

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Chemistry

10/15/22

Chemistry Stoichiometry solutions

Consider mixing 100. mL of 7.50×10–3M Fe2(SO4)3(aq) [=0.750 mmol Fe2(SO4)3(aq)]with 50.0 mL of 6.00×10–2M Ca(OH)2(aq) [=3.00 mmol Ca(OH)2(aq)]that react according to the net ionic precipitation... more

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Chemistry

10/15/22

From the reaction: B2H6 + O2 → HBO2 + H2O How many grams of water are produced from 16.8 g of B2H6 is used?

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Chemistry

10/14/22

Explain why spectator ions such as sodium and chloride do not affect the pH of an aqueous salt solution. Include a discussion of reactivity in your explanation.

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Answers •1

Equilibrium: extent of chemical reactions

For the following reaction, 24.6 grams of nitrogen monoxide are allowed to react with 1.42 grams of hydrogen gas.

For the reaction 2 SO₃(g) ⇌ 2 SO₂(g) + O₂(g) Kp = 2.62 × 10⁻⁶ at 400 °C. A 1.50 L vessel at 400 °C is filled with SO₃(g) at an initial pressure of 3.00 atm and allowed to come to equilibrium...

What mass of simple sugar glucose is produced by the reaction of 5.3g of carbon dioxide

Analytical Chemistry Question

Calculate the total number of calories produced in the reaction.

What is the pH?

What is the pH?

Chemistry Help Please

Calculating the pH of a buffer solution

Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water

EQUILIBRIUM QUESTION

Chemistry Problem

Chemistry Problem

a particular beer is 6.50% ethanol by volume. If a single beer contains 750 ml of beer, what mass in g of ethanol is present in the bottle? The density of ethanol is 0.789 g ethanol/mL.

What is the molarity (M) of a 2.0% (w/v) NaCl solution?

Final Concentration

Im not sure how to start answering this question and what equations to use

What is the value for pH?

HC₂H₃O₂(aq) + NaOH(aq) →

NaClO(aq) + H₂SO₄(aq) →

If you have a solution that is 0.4000 M LiNO2, 0.8000 M HNO2, and 0.0800 M KOH, what is the resulting pH?

Chemistry Stoichiometry solutions

From the reaction: B2H6 + O2 → HBO2 + H2O How many grams of water are produced from 16.8 g of B2H6 is used?

Explain why spectator ions such as sodium and chloride do not affect the pH of an aqueous salt solution. Include a discussion of reactivity in your explanation.

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