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Determine the acidity or basicity of the following molecules: ammonia (NH3), hydrogen chloride (HCl), water (H2O), and carbon dioxide (CO2). Rank them in order of increasing acidity or increasing basicity and explain your reasoning.

asked 1 day ago in Chemical bonding

1 answer 62 views

What is the electronic structure and composition of the first excited state of the ethylene molecule (C2H4) using time-dependent density functional theory?

asked 5 days ago in Computational Chemistry

1 answer 54 views

Calculate the Gibbs free energy change for the combustion of methane gas to produce carbon dioxide and water vapor at a temperature of 298K and a pressure of 1 atm, given the equation:CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) ΔG°f = -394.36 kJ/mol (CO2); ΔG°f = -237.13 kJ/mol (H2O); ΔG°f = -50.8 kJ/mol (CH4); ΔG°f = 0 kJ/mol (O2)

asked Jan 23 in Chemical thermodynamics

1 answer 46 views

A chemistry student wants to determine the effect of adding a buffer to a solution containing acetic acid (CH3COOH) and its conjugate base (CH3COO-), which is in equilibrium with its ionized form (H+ and CH3COO-). The initial concentration of acetic acid is 0.2 M and the pH of the solution is 4.5. If the student adds a buffer solution containing equal amounts of acetic acid and sodium acetate (NaCH3COO), what will be the new pH of the solution and the extent of shift in equilibrium position?

answered Jan 22 in Chemical equilibrium

1 answer 14 views

Why is reliability important in measurement?

answered Jan 20 in Psychology

1 answer 44 views

What is Konrad Lorenz known for in the field of animal psychology?

answered Jan 20 in Psychology

1 answer 26 views

According to the psychodynamic theory, what is anxiety?

answered Jan 17 in Psychology

1 answer 24 views

When evaluating the meaning-making theory, what strength can be pointed out?

answered Jan 15 in Psychology

1 answer 18 views

What is self-care?

asked Jan 14 in Psychology

1 answer 31 views

Are emotion regulation strategies always effective for coping?

asked Jan 14 in Psychology

1 answer 24 views

When a star's core collapses inward while the outer layers spread and cool, what "colorful" celestial body forms?

answered Jan 8 in Science

1 answer 45 views

What substances digest the food in the vacuole of an ingestive protist?

asked Jan 7 in Science

1 answer 24 views

What is the term for the number of waves that pass a fixed point in a given amount of time?

asked Jan 7 in Science

1 answer 25 views

What do nonvascular plants reproduce with?

answered Jan 6 in Science

1 answer 23 views

What are usually planted in rows with bare soil in between the rows?

asked Jan 6 in Science

1 answer 56 views

What are all of the digits that can be known with certainty in a measurement plus an estimatied last digit called?

asked Jan 2 in Science

1 answer 33 views

The value that occurs most often in a data set is called the?

answered Jan 2 in Science

1 answer 28 views

The svedberg unit is a measure of the rate of what, which is tested in a centrifuge?

asked Jan 2 in Science

1 answer 10 views

The anatomy of primate eyes shows they tend to rely more on vision than what sense, which is dominant in many other mammals?

asked Dec 31, 2024 in Science

1 answer 22 views

In an experiment, what is the affected variable called?

answered Dec 31, 2024 in Science

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