Recent activity by QSALea374924

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Calculate the standard enthalpy change for the phase transition reaction of solid calcium carbonate (CaCO3) to gaseous carbon dioxide (CO2) at 298 K, given the following formation enthalpies: ΔHf°(CaCO3) = -1206.9 kJ/mol ΔHf°(CO2) = -393.5 kJ/mol Also, assume that the specific heat capacity of CaCO3 is 0.82 J/g·K and that of CO2 is 0.85 J/g·K.

asked 2 days ago in Chemical thermodynamics

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What are the differences in chemical structure between carbohydrates and lipids, and how do these differences contribute to their distinct properties and functions in biological systems? Provide examples of each molecule and their biological roles.

asked 5 days ago in Organic Chemistry

1 answer 22 views

What is the role of the unconscious in psychodynamic therapy?

answered Jan 20 in Psychology

1 answer 48 views

How does the bystander effect impact group behaviour in emergency situations?

asked Jan 20 in Psychology

1 answer 20 views

What is the difference between cognitive and behavioural approaches to treatment?

asked Jan 15 in Psychology

1 answer 25 views

Where do skeletal muscles usually attach?

answered Jan 8 in Science

1 answer 38 views

What kind of bonding between alcohol molecules means that more energy is required to convert the liquid to vapor, and boiling points are therefore high?

answered Jan 7 in Science

1 answer 18 views

What is a winding ridge of sand deposited by a stream of meltwater called?

answered Jan 6 in Science

1 answer 41 views

Alchemists, as early as the eighth century, knew nitric acid as aqua fortis, which means?

answered Dec 30, 2024 in Science

1 answer 51 views

A carcinogen is nything in the environment that can cause what disease?

answered Dec 30, 2024 in Science

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