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What is the product of the reaction between methane and chlorine under UV light?

asked Jan 21 in Organic Chemistry by LibbyHollera (2.2k points)

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A solution contains 0.1 M of an unknown ion X. The electrode potential of this ion X is measured to be +0.60 V versus the standard hydrogen electrode (SHE). Calculate the concentration of ion X in the solution using electrochemical methods.

asked Jan 22 in ElectroChemistry by AidanSewell2 (2.1k points)

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1 answer 67 views

A chemistry student is asked to determine the effect of temperature and pressure on the equilibrium of the reaction: 2NO2(g) ⇋ N2O4(g) using Le Chatelier’s principle. The initial concentration of NO2(g) is 0.5 mol/L and the reaction is carried out at 25°C. How will the equilibrium shift if the temperature is increased to 100°C and the pressure is decreased to 0.5 atm?

asked Jan 22 in Chemical reactions by Murray05Y450 (2.2k points)

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1 answer 54 views

A student wants to produce aluminum oxide (Al2O3) in the lab. Write a balanced chemical equation for the reaction between aluminum and oxygen gas to form aluminum oxide. Calculate how many grams of Al2O3 can be produced from 25 grams of aluminum reacting with excess oxygen gas.

asked Jan 22 in Inorganic Chemistry by VanBohannon (2.5k points)

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1 answer 70 views

A 0.25 mol/L solution of ethanoic acid (CH3COOH) is mixed with a 0.40 mol/L solution of sodium acetate (CH3COONa). The equilibrium constant for the reaction CH3COOH + NaCH3COO ⇌ CH3COONa + H2O is 1.8 x 10^-5. What is the concentration of CH3COONa at equilibrium?

asked Jan 22 in Chemical equilibrium by LeoQuinonez1 (2.5k points)

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1 answer 12 views

Calculate the formal charge of the nitrogen atom in the molecule NH3. Show your work and explain the significance of the result.

asked Jan 23 in Chemical bonding by AgnesXyg5256 (2.3k points)

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1 answer 53 views

At 25°C, an electrochemical cell consists of a silver electrode in a 0.010 M AgNO3 solution and a platinum electrode in a 1.0 x 10^-3 M HCl solution. Calculate the resistance of the cell if the distance between the two electrodes is 2.0 cm and the area of each electrode is 5.0 cm^2.

asked Jan 22 in ElectroChemistry by CooperPallad (2.2k points)

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1 answer 62 views

A chemistry student wants to design an electrochemical cell that produces a voltage of at least 1.5 volts. The available electrodes are copper and aluminum. Using Faraday's law, calculate the mass of copper needed to produce the required voltage if aluminum is used as the other electrode. The specific gravity of copper is 8.96 g/cm³, and the standard reduction potential of copper and aluminum are -0.34 V and -1.66 V, respectively.

asked Jan 22 in Physical Chemistry by StephaineCro (2.5k points)

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1 answer 101 views

How many structural isomers are possible for the molecular formula C5H12 and provide their names and structures?

asked Jan 21 in Organic Chemistry by MercedesLang (2.5k points)

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1 answer 65 views

A chemistry student needs to determine the percent composition of nitrogen (N) in a sample of an unknown organic compound. Using elemental analysis, the student determines the mass of the sample to be 0.254 g and the mass of the products after combustion to be 0.727 g of CO2 and 0.298 g of H2O. What is the percent composition of nitrogen in the sample?

asked Jan 22 in Analytical Chemistry by CarmineGaric (2.5k points)

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1 answer 104 views

What is the systematic name of the organic compound with the molecular formula C6H12O and a ketone functional group located on the second carbon atom from the left end?

asked Jan 21 in Organic Chemistry by IvyHogan8844 (2.2k points)

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1 answer 12 views

Calculate the exchange current density for a zinc electrode immersed in a 1.0 M solution of zinc sulfate at 25°C when the overpotential is 0.05 V. The standard reduction potential for the Zn2+/Zn couple is -0.76 V. The transfer coefficient is 0.5. Assume that the concentration of the electrolyte does not change significantly during the reaction.

asked Jan 23 in ElectroChemistry by NickolasShum (2.7k points)

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1 answer 58 views

A student is given a mixture of two unknown substances, one organic and one inorganic, and is asked to identify these compounds using mass spectrometry. Can you provide a step-by-step procedure using mass spectrometry to identify the two unknown compounds?

asked Jan 22 in Analytical Chemistry by JaninaDohert (2.1k points)

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1 answer 61 views

A chemistry student wants to measure the surface tension of a liquid but does not have access to a tensiometer. How can the student measure the surface tension using simple materials found in a chemistry lab?

asked Jan 22 in Surface Chemistry by PeteWirtz263 (2.6k points)

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1 answer 67 views

A chemist performed a reaction that was supposed to produce 25 grams of the desired product. However, upon measuring the amount of product produced, it was found that only 18 grams were obtained. Calculate the percent yield of the reaction.

asked Jan 22 in Chemical reactions by NadineKzd354 (2.3k points)

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1 answer 99 views

Identify the product(s) and name the type of nucleophilic substitution reaction that occurs when 1-bromobutane reacts with sodium hydroxide in ethanol solvent.

asked Jan 21 in Organic Chemistry by Annett65L392 (2.0k points)

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1 answer 57 views

A student needs to determine the enthalpy change of a chemical reaction using the Hess's Law equation. They have the following information:- The enthalpy change for Reaction 1 is -210 kJ/mol- The enthalpy change for Reaction 2 is -325 kJ/mol- The enthalpy change for Reaction 3 is 155 kJ/molThe student needs to use Hess's Law to calculate the enthalpy change for the following reaction:4A + 3B → 2CGiven the information above, what is the enthalpy change for the reaction?

asked Jan 22 in Chemical reactions by EdwinLindell (1.8k points)

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1 answer 61 views

A chemistry student wants to investigate the adsorption behavior of a gas on a solid surface. Using the Langmuir adsorption isotherm, determine the maximum adsorption capacity of the surface and the equilibrium constant, if the surface area of the solid is 10 cm$^2$ and the gas pressure is varied from 0.1 to 1 bar at a constant temperature of 298 K.

asked Jan 22 in Surface Chemistry by IsraelAshwor (2.6k points)

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1 answer 60 views

A laboratory assistant is asked to prepare a buffer solution with a pH of 7.10 using acetic acid (CH3COOH) and sodium acetate (NaCH3COO). If the laboratory assistant has 250 mL of 0.20 M acetic acid, how many grams of NaCH3COO will be needed to make the buffer solution?

asked Jan 22 in Chemical reactions by AnnKetner183 (2.2k points)

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1 answer 72 views

How does the coordination chemistry of metalloenzymes and metalloproteins contribute to their functionality in biological processes?

asked Jan 22 in Coordination Chemistry by IvyHogan8844 (2.2k points)

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