Recent activity by UVMMarietta

1 answer 25 views

How can chemistry teachers provide better support for students with learning disabilities in order to help them understand complex chemical concepts and perform well in exams?

asked 5 days ago in Chemical education

1 answer 48 views

Given that the enthalpy of vaporization of water is 40.7 kJ/mol at its boiling point of 100°C, calculate the amount of energy required to boil 500g of water starting from 25°C.

asked 6 days ago in ThermoChemistry

1 answer 36 views

Consider the metalloprotein hemoglobin, which has four heme groups each coordinated to a single iron ion. Suppose that ferrous iron in the heme group of hemoglobin is oxidized to ferric state by reacting with hydrogen peroxide. Calculate the number of hydrogen peroxide molecules needed to oxidize all the iron ions of hemoglobin in a human body that has a total of 5 liters of blood, assuming the concentration of hemoglobin in blood is 15 grams per liter.

asked Feb 3 in Coordination Chemistry

1 answer 28 views

Calculate the standard enthalpy change for the reaction: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l) Given the following information: ΔHf° [NaOH(aq)] = -469.1 kJ/mol ΔHf° [HCl(aq)] = -167.2 kJ/mol ΔHf° [NaCl(aq)] = -407.3 kJ/mol ΔHf° [H2O(l)] = -286 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 55 views

Calculate the amount of copper deposited on the cathode when a current of 5 amperes is passed through a copper sulfate solution for a duration of 30 minutes. The molar mass of copper is 63.55 g/mol and the Faraday constant is 96500 C/mol. The electrode area is 10 cm² and the copper sulfate solution has a concentration of 0.1 M. Assume 100% efficiency in the electrochemical reaction.

answered Jan 23 in ElectroChemistry

1 answer 36 views

What are the strengths of discursive psychology?

answered Jan 20 in Psychology

1 answer 29 views

How is a correlation coefficient calculated?

asked Jan 17 in Psychology

1 answer 10 views

When did community psychology emerge?

asked Jan 17 in Psychology

1 answer 32 views

What is the influence of nurture on personality development?

asked Jan 15 in Psychology

1 answer 47 views

What two organs secrete fluids that aid in digestion?

asked Jan 8 in Science

1 answer 26 views

What makes up the mass number of an atom?

answered Jan 7 in Science

1 answer 8 views

What is made up of nerve cells that sense stimuli and transmit signals?

asked Jan 6 in Science

1 answer 46 views

What does unequal heating of the atmosphere cause?

asked Jan 6 in Science

1 answer 41 views

Amides are actually formed by bringing together an amine-containing molecule and molecule containing what?

asked Dec 30, 2024 in Science

1 answer 14 views

What molecule is made of two hydrogen atoms and one oxygen atom?

answered Dec 28, 2024 in Science

1 answer 42 views

The pituitary gland is associated with what bodily system?

answered Dec 27, 2024 in Science

1 answer 26 views

The conductive cells within the heart establish the heart rate and transmit it through the what?

asked Dec 27, 2024 in Science

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