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Chemistry

04/05/23

I need help understanding this problem

Nitrogen fixation is the process of converting diatomic nitrogen, which is difficult for organisms to utilize, into ammonia which is much more convenient.N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g)Assume that a... more

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Chemistry

04/05/23

For the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) (E° = 0.77 V at 25 °C), what is [Fe²⁺] if [Mn²⁺] = 0.050 M and E = 0.78 V? Assume T is 298 K

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Chemistry

04/05/23

Limiting reactant, theoretical, percentage yield problem

I'm new to this concept, so it's a little bit confusing.. I need some help. Thanks.A chemist synthesised phosphorous trichloride by mixing 12.0 g of P with 35.0 g Cl2. The limiting reactant is Cl2.... more

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Chemistry

04/05/23

What advantages does an inverted burette have over an inverted graduated cylinder, an inverted test tube, and a balloon?

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Chemistry

04/05/23

Step by step chemistry

What would be the concentration of hydroxide ions in a solution made by dissolving 10.0 g of sodium hydroxide in a solution with a final volume of 150.0 mL

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Chemistry

04/05/23

Chemistry step by step

What is the molarity of a solution in which 0.45 grams of sodium nitrate are dissolved in 265 mL of solution?

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Chemistry

04/05/23

How can Brandon rescue the titration without starting over?

Brandon is attempting to standardize a NaOH solution, that is approximately 0.05 M, against 0.145 grams of sulfamic acid. At around 33 ml NaOH titrant he realizes that he forgot to add the... more

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Chemistry

04/05/23

What is the concentration of the NaOH?

Suppose you wanted to standardize some NaOH solution but discovered that you were out of sulfamic acid. You managed to find a bottle of oxalic acid dihydrate and decided to use it as the primary... more

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Chemistry

04/05/23

if you have 4.6*10^16 atoms of chlorine, how many moles of AlCl3 can be made

Thank you in advance

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Chemistry

04/05/23

Cu(s) + 4HNO3(aq) --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l), suppose that you add 5.0 mL of 6 M nitric acid to a sphere of copper metal that weighs 0.58 grams. which reactant is the limiting reagent?

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Chemistry

04/05/23

In the reaction, CaCO3(s)⟶CaO(s)+CO2(g) how many liters of carbon dioxide, CO2, measured at STP, would be produced from the decomposition of 325 g of calcium carbonate, CaCO3?

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Chemistry

04/05/23

When aluminum reacts with concentrated hydrochloric acid, hydrogen gas is produced. 2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) What mass of Al(s) is required to produce 717.5 mL of H2(g) at STP?

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Chemistry

04/05/23

45 grams of octane react with oxygen in the air. How many moles of oxygen were consumed in the reaction?

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Chemistry

04/04/23

Complete the balanced molecular reaction for the following weak base with a strong acid:

2 NaClO2 (aq) + H2SO4 ->

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Chemistry

04/04/23

Determine the concentration of copper in the saturated copper (II) tartrate solution.

Saturated Solution: 0.616My equation from graph: 13.389x-0.0342

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Chemistry

04/04/23

I need help understanding this question

How can you combine the half-reactions below to give the overall reaction for the electrolysis of water? Reaction A: 2H⁺ + 2e⁻ → H₂ Reaction B: ½ O₂ + 2H⁺ + 2e⁻ → H₂OHow can you combine the... more

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Chemistry

04/04/23

CHM161 Help. Labflow report need help answering a question

If all of the iron from Question 1 is diluted in a 50-mL flask (Sample Stock Solution), what is the concentration, in ppm, of the resulting solution?

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Chemistry

04/04/23

Solve for the enthalpy change of steam reforming methane

The steam reforming of methane occurs according to the following chemical equation: CH₄(g) + 2H₂O(g) ⇌ CO₂(g) + 4H₂(g) Use the following equations to solve for the enthalpy change of steam... more

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Chemistry

04/04/23

What is the change in enthalpy when 1.50 moles of H2 are reacted with an excess O₂ of according to the following balanced chemical reaction: 2H₂(g)+O₂(g)→2H₂O(l) ∆H=-572 kj

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Chemistry

04/04/23

Organic acids and bases

Which weak acid would be best to use when preparing a buffer solution with a pH of 8.40 ? an acid with p𝐾a=4.30 an acid with p𝐾a=9.60 an acid with p𝐾a=6.20 an acid with p𝐾a=3.20 an acid with... more

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Chemistry

04/04/23

Organic acids and bases

A weak acid, HA, has a p𝐾a of 4.655 . If a solution of this acid has a pH of 4.935 , what percentage of the acid is not ionized? Assume all H+ in the solution came from the ionization of HA.

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Chemistry

04/04/23

organic acids and bases

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0158 M solution. The pH of the resulting solution is 2.59. Calculate the p𝐾a for the acid.

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Chemistry

04/04/23

What is the concentration of M2+ ions at equilibrium?

The formation constant* of [M(CN)4]2− is 7.70×1016, where M is a generic metal.A 0.160 mole quantity of M(NO3)2 is added to a liter of 0.910 M NaCN solution. What is the concentration of M2+ ions... more

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Chemistry

04/04/23

chemistry question

Hydrazine, N2H4, reacts with oxygen to form nitrogen gas and water.N2H4(aq)+O2(g)⟶N2(g)+2H2O(l)If 4.05 g of N2H4 reacts with excess oxygen and produces 0.350 L of N2, at 295 K and 1.00 atm, what is... more

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Chemistry

04/04/23

The endpoint was reached after the addition of 15.35 mL of the standard solution. What is the concentration of the original sulfuric acid solution?

A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1155 M0.1155 M standard sodium hydroxide solution. He... more

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I need help understanding this problem

For the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) (E° = 0.77 V at 25 °C), what is [Fe²⁺] if [Mn²⁺] = 0.050 M and E = 0.78 V? Assume T is 298 K

Limiting reactant, theoretical, percentage yield problem

What advantages does an inverted burette have over an inverted graduated cylinder, an inverted test tube, and a balloon?

Step by step chemistry

Chemistry step by step

How can Brandon rescue the titration without starting over?

What is the concentration of the NaOH?

if you have 4.6*10^16 atoms of chlorine, how many moles of AlCl3 can be made

Cu(s) + 4HNO3(aq) --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l), suppose that you add 5.0 mL of 6 M nitric acid to a sphere of copper metal that weighs 0.58 grams. which reactant is the limiting reagent?

In the reaction, CaCO3(s)⟶CaO(s)+CO2(g) how many liters of carbon dioxide, CO2, measured at STP, would be produced from the decomposition of 325 g of calcium carbonate, CaCO3?

When aluminum reacts with concentrated hydrochloric acid, hydrogen gas is produced. 2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) What mass of Al(s) is required to produce 717.5 mL of H2(g) at STP?

45 grams of octane react with oxygen in the air. How many moles of oxygen were consumed in the reaction?

Complete the balanced molecular reaction for the following weak base with a strong acid:

Determine the concentration of copper in the saturated copper (II) tartrate solution.

I need help understanding this question

CHM161 Help. Labflow report need help answering a question

Solve for the enthalpy change of steam reforming methane

What is the change in enthalpy when 1.50 moles of H2 are reacted with an excess O₂ of according to the following balanced chemical reaction: 2H₂(g)+O₂(g)→2H₂O(l) ∆H=-572 kj

Organic acids and bases

Organic acids and bases

organic acids and bases

What is the concentration of M2+ ions at equilibrium?

chemistry question

The endpoint was reached after the addition of 15.35 mL of the standard solution. What is the concentration of the original sulfuric acid solution?

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