Recent activity by WalterMusgra

1 answer 29 views

How can chemistry educators increase the emphasis on safety protocols in chemistry labs and ensure that students are properly trained to prevent accidents and handle hazardous materials?

asked 1 day ago in Chemical education

1 answer 41 views

Calculate the enthalpy change when 50 mL of 0.2 M sodium chloride solution is mixed with 50 mL of 0.2 M silver nitrate solution. The final temperature of the solution was found to be 25°C and the initial temperature of the reactants was 30°C. The specific heat of the solution is 4.18 J/g°C, and the density of the solution is 1.00 g/mL.

answered Jan 23 in ThermoChemistry

1 answer 62 views

A student needs to determine the enthalpy change (ΔH) for the reaction between ammonium nitrate (NH4NO3) and water (H2O) using Hess's Law calculations. Given the following information: - ΔHf° (NH4NO3) = -365.4 kJ/mol- ΔHf° (HNO3) = -207.3 kJ/mol- ΔHf° (NH4+) = -132.5 kJ/mol- ΔHf° (NO3-) = -206.1 kJ/mol- ΔHf° (H2O) = -285.83 kJ/molFormulate the thermochemical equation for the reaction by using the given data and Hess's Law calculations, and then calculate the enthalpy change for the reaction.

answered Jan 22 in ThermoChemistry

1 answer 44 views

What is the aromaticity of the nitrogen-containing heterocyclic compound pyridine? How does it differ from the aromaticity of benzene?

answered Jan 21 in Organic Chemistry

1 answer 23 views

When applying constructivist theory in the classroom, what should teachers do differently?

answered Jan 20 in Psychology

1 answer 8 views

What are some examples of theoretical frameworks used in qualitative research?

asked Jan 16 in Psychology

1 answer 46 views

What is the expectancy effect?

asked Jan 15 in Psychology

1 answer 37 views

What is gender dysphoria?

asked Jan 14 in Psychology

1 answer 26 views

What is the difference between Cognitive Dissonance theory and Self-Perception theory?

asked Jan 13 in Psychology

1 answer 12 views

Surprisingly, where would you find the earth’s tallest mountains and deepest canyons?

answered Dec 31, 2024 in Science

1 answer 50 views

Sea-lilies, sea cucumbers and sea stars fall into what class of organism?

asked Dec 31, 2024 in Science

1 answer 19 views

Nitrogen is a very important element to living things, because it is part of nucleotides and amino acids that are the building blocks of nucleic acids and these?

asked Dec 31, 2024 in Science

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