Recent activity by AlexandriaCo

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Here's an example problem for the student to solve:When 0.10 moles of a weak acid HA are dissolved in 1.00 L of water, the pH of the resulting solution is measured to be 4.20. Calculate the equilibrium constant (Ka) for the dissociation of HA if the acid is known to be 10% ionized.

answered 1 day ago in Chemical equilibrium

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Calculate the entropy change (ΔS) for the reaction below at 298 K:2H2(g) + O2(g) → 2H2O(l)Given the standard molar entropy values are:H2(g) = 130.68 J/K molO2(g) = 205.03 J/K molH2O(l) = 69.91 J/K mol

asked Jan 23 in Chemical thermodynamics

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What is the terminal decline hypothesis?

asked Jan 20 in Psychology

1 answer 19 views

Who proposed the 'triarchic theory of intelligence'?

asked Jan 15 in Psychology

1 answer 31 views

What does the bottom-up theory state?

answered Jan 15 in Psychology

1 answer 40 views

According to the Cognitive Load Theory, what is working memory?

asked Jan 15 in Psychology

1 answer 52 views

What is the Macrosystems component of the Ecological Systems Theory?

asked Jan 15 in Psychology

1 answer 16 views

What are the components of a hypothesis?

answered Jan 14 in Psychology

1 answer 20 views

Why is evolutionary psychology important?

answered Jan 14 in Psychology

1 answer 35 views

What is the main premise of humanistic psychology?

asked Jan 13 in Psychology

1 answer 19 views

Who wrote the book, on the origin of species?

answered Jan 8 in Science

1 answer 21 views

Which nerve directly stimulates the contraction of skeletal muscles in the pharynx and larynx to contribute to the swallowing and speech functions?

answered Jan 8 in Science

1 answer 38 views

What type of species can alternate between medusa and polyp forms?

answered Jan 8 in Science

1 answer 7 views

If a solution contains so much solute that its solubility limit is reached, the solution is said to be what?

answered Dec 30, 2024 in Science

1 answer 26 views

Competition with what emerging animal group may have led to extinction of cynodonts about 200 million years ago?

answered Dec 30, 2024 in Science

1 answer 22 views

Are the majority of archaea chemotrophs or photosynthetic?

asked Dec 30, 2024 in Science

1 answer 22 views

Animal-like protists are called what?

answered Dec 30, 2024 in Science

1 answer 33 views

What part of the plant do nutrients enter?

asked Dec 27, 2024 in Science

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