Questions by CorneliusMen

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1 answer 24 views

What is the predicted mechanism for the reaction between ethane and chlorine gas, and how does the presence of a catalyst affect the selectivity of the reaction?

asked 5 days ago in Quantum Chemistry

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1 answer 26 views

How do Persistent organic pollutants (POPs) affect the soil quality and plant growth in a polluted environment?

asked Feb 14 in Environmental Chemistry

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1 answer 38 views

Determine the standard enthalpy change for the precipitation reaction between aqueous solutions of silver nitrate (AgNO3) and potassium chloride (KCl), given the molar concentrations of AgNO3 and KCl are 0.10 M and 0.20 M, respectively. The balanced chemical equation for the reaction is:AgNO3(aq) + KCl(aq) -> AgCl(s) + KNO3(aq)The enthalpies of formation for AgNO3(aq), KCl(aq), AgCl(s), and KNO3(aq) are -365.6 kJ/mol, -436.0 kJ/mol, -127.0 kJ/mol, and -494.6 kJ/mol, respectively.

asked Feb 4 in Chemical thermodynamics

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1 answer 65 views

Calculate the wavelength of light that must be absorbed for an electron in a hydrogen atom to transition from the n=3 to n=2 energy level, using the equation for energy of a hydrogen atom: E = -13.6/n^2 eV and the Planck constant, h = 6.626 × 10^-34 J s.

asked Feb 3 in Quantum Chemistry

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1 answer 55 views

Calculate the enthalpy change for the combustion of 5.67 grams of methane (CH4) if the standard enthalpy of combustion of methane is -890.4 kJ/mol.

asked Jan 23 in Chemical reactions

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1 answer 58 views

According to the humanistic theory, what is the role of self-actualisation in recovery after trauma?

asked Jan 17 in Psychology

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1 answer 12 views

What is a dependent variable in psychology research?

asked Jan 17 in Psychology

0 votes

1 answer 43 views

What is the main criticism of the attribution theory?

asked Jan 16 in Psychology

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1 answer 43 views

What are some common errors in sampling?

asked Jan 15 in Psychology

0 votes

1 answer 37 views

Who proposed the 'triarchic theory of intelligence'?

asked Jan 15 in Psychology

0 votes

1 answer 49 views

How do we process language?

asked Jan 15 in Psychology

0 votes

1 answer 38 views

Which is the most common sti (sexually transmitted infection) in the united states?

asked Jan 8 in Science

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1 answer 32 views

What term is used to describe the tendency of a mineral to break along certain planes?

asked Jan 8 in Science

0 votes

1 answer 27 views

What is the most important factor determining soil type?

asked Jan 7 in Science

0 votes

1 answer 34 views

What is the energy of moving matter?

asked Jan 6 in Science

0 votes

1 answer 31 views

What is a sac-like organ that stores urine?

asked Jan 6 in Science

+2 votes

1 answer 15 views

What enables gamma rays to pass through hard matters like bones, teeth, and just about anything?

asked Jan 6 in Science

0 votes

1 answer 32 views

What do you call a science that aims to find solutions to practical problems?

asked Jan 6 in Science

0 votes

1 answer 28 views

What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts?

asked Jan 6 in Science

0 votes

1 answer 47 views

Natural selection cannot create new variations in organisms - these new variations must be created by what, which are usually associated with some sort of abnormality?

asked Dec 31, 2024 in Science

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