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A student wants to determine the rate constant for the reaction between hydrogen and iodine gases, given the following experimental data:-At t=0, the initial concentration of hydrogen is 0.025 M and iodine is 0.015 M.-10 seconds later, the concentration of hydrogen is 0.018 M and iodine is 0.022 M.-The reaction is second-order with respect to hydrogen, and first-order with respect to iodine.What is the rate constant for the reaction?

asked Jan 22 in Chemical kinetics by XGJSidney76 (2.8k points)

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1 answer 68 views

A chemistry student is trying to determine the boiling point of a solution containing 30 grams of glucose (C6H12O6) dissolved in 100 grams of water. Given that the boiling point of pure water is 100°C and the elevation constant for water is 0.512°C/m, what is the boiling point of the solution?

asked Jan 22 in Physical Chemistry by IDQMyles1187 (2.2k points)

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1 answer 102 views

What is the systematic name of a cycloalkane with 10 carbon atoms?

asked Jan 21 in Organic Chemistry by Rosaline02Y (2.5k points)

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A chemistry student needs to determine the dipole moment of a molecule that has three atoms arranged in a linear fashion, where the central atom is a carbon atom and the other two atoms are chlorine atoms. The student must also explain the factors that contribute to the dipole moment of the molecule.

asked Jan 22 in Chemical bonding by BrentonMcQua (2.1k points)

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1 answer 60 views

A student adds 0.1 M HCl to a solution containing 0.05 M NaOH. Calculate the effect on the equilibrium position of the system after adding a buffer solution consisting of 0.1 M CH3COOH and 0.1 M CH3COONa. Assume the dissociation constant (Ka) of CH3COOH is 1.8x10^-5.

asked Jan 22 in Chemical equilibrium by 81972453255 (2.5k points)

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1 answer 100 views

What is the identity of an unknown compound that shows a strong absorption at 1700 cm⁻¹ in its IR spectrum and displays a singlet at 2.2 ppm in its ¹H NMR spectrum?

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

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0 answers 97 views

A student needs to prepare a solution containing 50 g of ethanol (C2H5OH) dissolved in 250 g of water (H2O) at 25°C. Assuming the heat of mixing for ethanol and water is -5.02 kJ/mol, calculate the heat released or absorbed when the two substances are mixed. Express your answer in kJ.

asked Jan 22 in ThermoChemistry by Carole803671 (2.0k points)

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1 answer 60 views

A solution of nitrogen dioxide, NO2 gas, at a pressure of 2.50 atm and temperature of 300 K, reacts with oxygen gas, O2, to form nitrogen oxide, NO, and dioxide, NO2. Write the balanced chemical equation for the reaction and determine the equilibrium concentrations of all species if the value of the equilibrium constant, Kc, at 300 K is 4.0 x 10^-4.

asked Jan 22 in Chemical equilibrium by MarlaColes2 (2.4k points)

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A student performs a chemical reaction in which the theoretical yield of a particular product is 25 grams. After carrying out the reaction, the student recovers only 18 grams of the product. What is the percent yield of the reaction?

asked Jan 22 in Chemical reactions by LoreneQ88420 (2.0k points)

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1 answer 71 views

A 2.5 L container was initially filled with 0.1 M solution of nitrogen dioxide which decomposes into nitrogen monoxide and oxygen gas according to the following reaction:2NO2(g) ⇌ 2NO(g) + O2(g)After the system has reached equilibrium, the concentration of nitrogen monoxide is found to be 0.05 M. What is the equilibrium concentration of oxygen gas in the container?

asked Jan 22 in Chemical equilibrium by TerrieGaffne (2.6k points)

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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 61 views

A sample of a compound was analyzed and found to contain 52.35 % iron, 13.82 % sulfur, and 33.83 % oxygen by mass. Determine the empirical formula of the compound.

asked Jan 22 in Inorganic Chemistry by EmileR968610 (2.4k points)

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1 answer 73 views

A certain chemical reaction has a delta H value of -120 kJ/mol. If 2.5 moles of this reactant undergo the reaction, how much energy is released or absorbed by the reaction?

asked Jan 22 in ThermoChemistry by LaureneMcAle (2.8k points)

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1 answer 60 views

What is the product formed when propene undergoes electrophilic addition reaction with hydrogen bromide (HBr)?

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

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1 answer 101 views

What is the major product formed when 1-butene undergoes hydration in the presence of H2SO4 and H2O to form an alcohol?

asked Jan 21 in Organic Chemistry by 73351052550 (1.8k points)

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1 answer 54 views

Assuming a carbon-carbon double bond length of 1.33 Å and a carbon-hydrogen single bond length of 1.09 Å, what is the approximate bond length of a carbon-carbon triple bond in a molecule with a linear geometry?

asked Jan 22 in Physical Chemistry by AnibalX1615 (1.9k points)

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1 answer 55 views

A student wants to determine the rate constant of a first-order reaction. The initial concentration of reactant is 0.050 M and after 60 seconds, the concentration drops to 0.025 M. What is the rate constant of the reaction?

asked Jan 22 in Chemical kinetics by JeanetteShar (2.2k points)

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1 answer 100 views

What is the oxidation state of carbon in methanol?

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

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1 answer 58 views

A student needs to calculate the standard enthalpy change of combustion for propane using Hess's Law. They have the following information: C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) ΔH° = -2220 kJ/mol 2H2(g) + O2(g) → 2H2O(l) ΔH° = -484 kJ/mol 3C(s) + 2H2(g) → C3H8(g) ΔH° = +51 kJ/mol What is the standard enthalpy change of combustion for propane?

asked Jan 22 in ThermoChemistry by AddieFrayne (2.0k points)

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1 answer 60 views

A sample of an unknown inorganic compound contains 44.44% magnesium, 22.22% sulfur, and 33.33% oxygen by mass. Determine the empirical formula of the compound. If the molar mass of the compound is 120 g/mol, what is its molecular formula?

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

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