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Calculate the heat capacity of a 50g sample of water that is heated from 25°C to 45°C, given that the specific heat capacity of water is 4.184 J/g°C.

asked Jan 23 in Chemical thermodynamics by SterlingElki (2.2k points)

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Calculate the enthalpy change of isomerization for the reaction of cyclopropane to propene given that the standard enthalpy of formation of cyclopropane is -119.1 kJ/mol and the standard enthalpy of formation of propene is -103.8 kJ/mol. Assume that the enthalpy change of vaporization for both compounds is negligible.

asked Jan 23 in ThermoChemistry by JeremiahMoli (1.7k points)

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Calculate the bond angles and molecular geometry of the methane (CH4) molecule by using quantum chemistry principles.

asked Jan 23 in Quantum Chemistry by RosettaMcinn (1.7k points)

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Calculate the corrosion potential for a pure iron (Fe) electrode in a 1 M HCl solution at 25°C, given that the standard reduction potential of Fe in acidic solution is -0.44 V.

asked Jan 23 in ElectroChemistry by AnibalX1615 (2.1k points)

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Calculate the bond order and bond length of the nitrogen-oxygen bond in nitric oxide (NO).

asked Jan 23 in Inorganic Chemistry by AugustBranno (2.5k points)

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Calculate the enthalpy change (in kJ/mol) for the ionization of sulfuric acid (H2SO4) given the following information: H2SO4 (l) → H+ (aq) + HSO4- (aq)ΔH1 = +1009 kJ/molHSO4- (aq) → H+ (aq) + SO4^2- (aq)ΔH2 = +513 kJ/mol.

asked Jan 23 in ThermoChemistry by LinetteWaldo (1.6k points)

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Calculate the heat of neutralization for the reaction of 50 mL of 2.0 M hydrochloric acid and 50 mL of 2.0 M sodium hydroxide. The specific heat capacity of the solution is 4.18 J/g°C and the temperature change is 10°C.

asked Jan 23 in ThermoChemistry by JackQ7308746 (2.0k points)

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Calculate the bond order and bond length of the nitrate ion (NO3-) in its resonance hybrid form.

asked Jan 23 in Inorganic Chemistry by JanniePeek84 (2.0k points)

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Calculate the heat of mixing when 50.0 mL of 1.00 M HCl is added to 50.0 mL of 1.00 M NaOH at 25°C. The heat capacity of the solution is 4.18 J/(g·°C) and the density of the final solution is 1.00 g/mL. Assume that the heat change is equal to the enthalpy change.

asked Jan 23 in ThermoChemistry by EvieOconnor (2.3k points)

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Calculate the bond order and bond length of the CO molecule using molecular orbital theory.

asked Jan 23 in Inorganic Chemistry by ClementMackr (2.5k points)

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Calculate the enthalpy change for the ionization of 1 mol of hydrogen chloride gas at standard conditions, given that the enthalpy change for the reaction HCl(g) → H+(aq) + Cl-(aq) is -74.8 kJ/mol.

asked Jan 23 in ThermoChemistry by GrettaKavel6 (2.2k points)

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Calculate the enthalpy change of dissolution when 5 grams of sodium chloride (NaCl) dissolves in 100 mL of water at 25°C. The molar enthalpy of dissolution of sodium chloride is -3.9 kJ/mol.

asked Jan 23 in ThermoChemistry by Milagros70T7 (1.5k points)

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Calculate the average energy and specific heat capacity of a system containing 1000 molecules of an ideal gas at a temperature of 300 K, when the gas is subjected to an isochoric process and its volume remains constant at 2.5 L.

asked Jan 23 in Physical Chemistry by AOVFlorrie80 (1.7k points)

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Calculate the corrosion current density (in mA/cm²) of a copper metal in a 3 M sulfuric acid solution at 25°C, given that the corrosion potential is -0.35 V and the Tafel constants are 120 mV/dec for the anodic reaction and 60 mV/dec for the cathodic reaction.

asked Jan 23 in ElectroChemistry by MarisolWebst (1.8k points)

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Calculate the enthalpy of oxidation for the reaction of 2 moles of magnesium (Mg) with 1 mole of oxygen gas (O2) under standard conditions. Given the standard enthalpy of formation (ΔH°f) of MgO is -601.8 kJ/mol.

asked Jan 23 in ThermoChemistry by CalvinHornin (1.6k points)

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Calculate the enthalpy of isomerization for the reaction of cis-2-butene to its trans counterpart. Given the following information: - Heat of combustion of cis-2-butene = -3338.9 kJ/mol- Heat of combustion of trans-2-butene = -3478.6 kJ/mol- Heat of combustion of butane = -2877.2 kJ/mol

asked Jan 23 in ThermoChemistry by MoniqueBrins (1.9k points)

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Calculate the concentration of Cl^- ions in a solution if the electrode potential of a Pt/AgCl electrode in the solution is measured to be +0.222 V versus the standard hydrogen electrode (SHE) at 25°C. The standard electrode potential for the reaction AgCl(s) + e^- → Ag(s) + Cl^- is +0.222 V versus SHE at 25°C. Assume the activity coefficient of Cl^- ions in the solution is equal to 1.

asked Jan 23 in ElectroChemistry by MarciaBrooke (1.8k points)

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Calculate the equilibrium constant at 25°C for the reaction: CO(g) + 3H2(g) ⇌ CH4(g) + H2O(g) If at equilibrium, the concentration of CO is 0.10 M, H2 is 0.20 M, CH4 is 0.015 M and H2O is 0.035 M.

asked Jan 23 in Chemical equilibrium by IsabellaOcto (1.9k points)

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1 answer 97 views

A student conducted an experiment to produce copper sulfate using a known amount of copper oxide and sulfuric acid. The expected yield was 30 grams of copper sulfate, but the student obtained only 25 grams. What is the percent yield of the reaction?

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

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Calculate the amount of heat required to raise the temperature of 50 grams of water from 25°C to 85°C, given the specific heat of water is 4.184 J/g°C.

asked Jan 23 in ThermoChemistry by AgnesXyg5256 (2.0k points)

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