Questions by RosellaHeyse

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1 answer 40 views

A gas is contained in a cylinder at a pressure of 1 atm and a temperature of 25°C. The cylinder is fitted with a piston that can be moved to change the volume. The gas is allowed to expand irreversibly to a final pressure of 0.5 atm, and the temperature is kept constant. Calculate the work done by the system, and determine if the process is endothermic or exothermic.

asked Jan 22 in Physical Chemistry

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1 answer 24 views

When hot water gently rises to the surface, it creates a what?

asked Jan 8 in Science

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1 answer 13 views

What are alloys that are mostly composed of mercury known as?

asked Jan 2 in Science

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1 answer 23 views

The "double helix" shape is associated with what substance found in cells?

asked Dec 31, 2024 in Science

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