Recent activity by LeolaMoorman

1 answer 90 views

How can X-ray diffraction be used to identify the crystal structure and composition of a sample?

asked Jan 30 in Analytical Chemistry

1 answer 48 views

A student needs to determine the enthalpy change of a chemical reaction using the Hess's Law equation. They have the following information:- The enthalpy change for Reaction 1 is -210 kJ/mol- The enthalpy change for Reaction 2 is -325 kJ/mol- The enthalpy change for Reaction 3 is 155 kJ/molThe student needs to use Hess's Law to calculate the enthalpy change for the following reaction:4A + 3B → 2CGiven the information above, what is the enthalpy change for the reaction?

asked Jan 22 in Chemical reactions

1 answer 20 views

Where did the term 'fight or flight' come from?

answered Jan 20 in Psychology

1 answer 28 views

When was the Hamilton Rating Scale for Depression HAM-D first published?

asked Jan 20 in Psychology

1 answer 32 views

When do we perceive brightness?

answered Jan 15 in Psychology

1 answer 20 views

What kind of competition often leads to extinction because the species that is less well adapted gets fewer of the resources that both species need?

answered Jan 7 in Science

1 answer 31 views

What is defined as a change in the inherited traits of organisms over time?

answered Jan 6 in Science

1 answer 38 views

What do clouds trap into the atmosphere at night?

asked Jan 6 in Science

1 answer 28 views

What are temporary feet that protists have called?

answered Jan 3 in Science

1 answer 56 views

Pairs of fish that do not practice broadcast what may exhibit courtship behavior?

asked Dec 31, 2024 in Science

...