Recent activity by YWYElizbeth9

1 answer 28 views

How can chemistry teachers or institutions provide adequate and effective hands-on experimentation opportunities for students, despite limited resources and equipment?

asked 10 hours ago in Chemical education

1 answer 27 views

How can chemistry educators promote diversity and inclusivity in the classroom and laboratory to encourage underrepresented students to pursue careers in chemistry?

asked 21 hours ago in Chemical education

1 answer 38 views

Given the electrochemical reaction Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), calculate the standard cell potential at 25°C if the standard reduction potentials are E°(Cu2+/Cu) = 0.34 V and E°(Zn2+/Zn) = -0.76 V.

answered 23 hours ago in ElectroChemistry

1 answer 58 views

How does a computational study of enzyme catalysis help in understanding the reaction mechanism and active site conformation of enzymes?

asked 5 days ago in Computational Chemistry

1 answer 59 views

Calculate the enthalpy of polymerization of ethylene from the following data: Ethylene, C2H4(g) polymerizes to form polyethylene, (C2H4)n(s) with ΔHrxn = -44.0 kJ/mol at 298 K. Additionally, it is known that the standard enthalpies of formation of C2H4(g) and polyethylene (C2H4)n(s) are 52.3 kJ/mol and -128.2 kJ/mol, respectively. Assuming the enthalpy of polymerization is independent of temperature, calculate ΔHºp for the reaction.

answered Jan 23 in ThermoChemistry

1 answer 50 views

Calculate the bond dissociation energy for the Cl-Cl bond in Cl2(g) given that the standard enthalpy change for the reaction Cl2(g) → 2 Cl(g) is +121 kJ/mol and the bond dissociation energy for the Cl-Cl bond in Cl2(g) is known to be 242 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 39 views

Calculate the amount of heat required to melt 50 grams of ice at 0°C, given that the enthalpy of fusion of ice is 6.01 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 45 views

A student wanted to determine the Faraday constant using the electrolysis of silver nitrate solution. If a current of 2.5 amperes flowed through the solution for 2 hours and 30 minutes, and 0.508 grams of silver were deposited on the cathode, what is the value of the Faraday constant?

asked Jan 22 in ElectroChemistry

1 answer 18 views

Why was the term 'hysteria' challenged by feminist psychologists?

asked Jan 20 in Psychology

1 answer 32 views

Where is the criterion of explanatory power relevant?

asked Jan 16 in Psychology

1 answer 16 views

How does the biopsychosocial model provide a comprehensive approach to evaluating eating disorders?

asked Jan 16 in Psychology

1 answer 20 views

What is the role of socialisation in gender development?

answered Jan 15 in Psychology

1 answer 24 views

What is the Social Identity Theory?

answered Jan 15 in Psychology

1 answer 27 views

What is the parental investment theory?

answered Jan 15 in Psychology

1 answer 32 views

What is construct validity?

asked Jan 14 in Psychology

1 answer 6 views

What is the role of anxiety in obsessive-compulsive disorder?

answered Jan 13 in Psychology

1 answer 25 views

What is the purpose of peer review in academic publishing?

asked Jan 10 in Psychology

1 answer 21 views

What is it called when plant roots absorb liquid water and release water vapor into the atmosphere?

asked Jan 6 in Science

1 answer 29 views

What element is the most common element in the universe?

answered Jan 6 in Science

1 answer 44 views

What do you call an area covered with water, or possessing very soggy soil, all or part of the year?

answered Jan 6 in Science

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