Recent activity by Kaley34M2669

1 answer 32 views

Calculate the standard enthalpy change for the following reaction:2Fe(s) + 3/2O2(g) → Fe2O3(s)Given that the standard enthalpy of formation of Fe2O3(s) is -824 kJ/mol and the standard enthalpy of formation of Fe(s) and O2(g) are 0 kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 46 views

A student wants to determine the power output of a galvanic cell containing a zinc electrode and a copper electrode. The zinc electrode has a surface area of 20 cm² and is coated with a layer of zinc which weighs 0.5 grams. The copper electrode has a surface area of 15 cm² and is coated with a layer of copper that weighs 0.4 grams. The cell operates at standard conditions (25°C and 1 atm), and the electrolyte is a solution of 1 M copper sulfate and 1 M zinc sulfate. Calculate the power output of the electrochemical cell.

asked Jan 22 in ElectroChemistry

1 answer 48 views

How can the theory of planned behaviour be used for social change?

answered Jan 17 in Psychology

1 answer 57 views

Please evaluate the Diathesis-Stress Model.

answered Jan 16 in Psychology

1 answer 57 views

What is the importance of studying history in psychology?

answered Jan 14 in Psychology

1 answer 45 views

What is the difference between effortful processing and automatic processing?

answered Jan 14 in Psychology

1 answer 38 views

What is the difference between retroactive interference and proactive interference?

asked Jan 14 in Psychology

1 answer 30 views

What is 'cultural competence'?

answered Jan 13 in Psychology

1 answer 5 views

What is the cognitive perspective in psychology?

answered Jan 13 in Psychology

1 answer 28 views

The ends of linear chromosomes are maintained by the action of which enzyme?

asked Jan 2 in Science

1 answer 22 views

Resistors connected end to end are said to be in what?

asked Dec 31, 2024 in Science

1 answer 53 views

For the nervous system to function, neurons must be able to send and receive what?

asked Dec 30, 2024 in Science

1 answer 7 views

Many species secrete a hard external skeleton of what?

answered Dec 27, 2024 in Science

1 answer 24 views

In fruit flies, all homeotic genes are found on one what?

asked Dec 27, 2024 in Science

...