Recent activity by DNEMisty492

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.

answered 6 days ago in ThermoChemistry

1 answer 54 views

A chemist is attempting to electroplate copper onto a steel surface using a copper sulfate solution. The standard reduction potential for this reaction is -0.34 V, but the scientist is only seeing a voltage of -0.53 V. Calculate the overpotential for this electrochemical reaction.

answered Jan 22 in ElectroChemistry

1 answer 50 views

A chemist analyzed a sample of unknown substance and found that it contains 55% carbon, 9.17% of hydrogen and the rest of the mass is oxygen. What is the percentage by mass of oxygen in the sample?

asked Jan 22 in Analytical Chemistry

1 answer 25 views

Where is the source of motivation in Maslow's hierarchy of needs model?

asked Jan 20 in Psychology

1 answer 28 views

What is replicability?

answered Jan 15 in Psychology

1 answer 11 views

How does the evolutionary perspective explain personality?

answered Jan 15 in Psychology

1 answer 35 views

According to the direction of causality problem in correlational research, what does it refer to?

answered Jan 15 in Psychology

1 answer 34 views

How does the social identity theory explain intergroup relations?

asked Jan 15 in Psychology

1 answer 27 views

What was the early study of chemistry called?

answered Jan 8 in Science

1 answer 21 views

What type of polarization does a negative object create>

asked Jan 8 in Science

1 answer 27 views

As a polycrystalline material solidifies, grains with irregular shapes form. the interfaces between grains constitute grain what?

asked Dec 30, 2024 in Science

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