Recent activity by MellisaKrame

1 answer 28 views

Given a reaction with the following data, calculate the rate constant (k) of the reaction:2 A + 3 B → CAt a particular temperature, the initial concentration of A was 0.2 M and the initial concentration of B was 0.5 M. After 30 minutes, the concentration of A decreased to 0.1 M while the concentration of B decreased to 0.3 M. The reaction is second order with respect to A and first order with respect to B.

asked 1 day ago in Chemical kinetics

1 answer 33 views

Calculate the lattice energy of sodium chloride (NaCl) using Born-Haber cycle and Hess's law. Given the following data:- Enthalpy of sublimation of sodium (Na): +108.6 kJ/mol- Enthalpy of dissociation of chlorine (Cl2): +243.0 kJ/mol- Bond energy of Na-Cl bond: -412.0 kJ/mol- Ionization energy of sodium (Na): +496.0 kJ/mol- Electron affinity of chlorine (Cl): -349.0 kJ/mol- Heat of formation of sodium chloride (NaCl): -411.0 kJ/mol.

asked Jan 23 in Inorganic Chemistry

1 answer 44 views

Calculate the enthalpy change of the reduction reaction of Fe3+ to Fe2+ when 1.44 g of Fe3+ ions are reduced using a standard hydrogen electrode (E° = 0.00 V) at 298 K. The balanced half-reaction equations are given below:Fe3+ + e- → Fe2+ ( E° = +0.77 V)H+ + e- → 1/2 H2(g) ( E° = 0.00 V)

asked Jan 23 in ThermoChemistry

1 answer 26 views

According to the sunk cost fallacy, what drives people to continue investing in something?

answered Jan 20 in Psychology

1 answer 29 views

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answered Jan 20 in Psychology

1 answer 20 views

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asked Jan 20 in Psychology

1 answer 48 views

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1 answer 18 views

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answered Jan 15 in Psychology

1 answer 18 views

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answered Jan 8 in Science

1 answer 24 views

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answered Jan 7 in Science

1 answer 25 views

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answered Dec 31, 2024 in Science

1 answer 22 views

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asked Dec 31, 2024 in Science

1 answer 28 views

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answered Dec 30, 2024 in Science

1 answer 27 views

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answered Dec 30, 2024 in Science

1 answer 18 views

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asked Dec 30, 2024 in Science

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