Recent activity by Alyce51K2334

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Given a sample of dry ice (solid CO2) with a mass of 50 grams, calculate the amount of heat energy that needs to be added to sublimate it completely into gaseous CO2 at a temperature of -78.5°C. The heat of sublimation of CO2 is 25.2 kJ/mol. (Assume that CO2 is an ideal gas under these conditions.)

answered 1 day ago in ThermoChemistry

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Determine the bond angle in a water molecule using the VSEPR theory and explain how the shape of the molecule affects its polarity.

asked 1 day ago in Chemical bonding

1 answer 15 views

What is extinction in behaviourism?

asked Jan 13 in Psychology

1 answer 8 views

Which type of diabetes involves the pancreas not secreting enough insulin, which causes high levels of glucose in the blood?

answered Jan 8 in Science

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When two skateboarders push against each other what happens?

asked Jan 8 in Science

1 answer 34 views

What type of cells does meiosis produce?

asked Jan 8 in Science

1 answer 33 views

What do gametes undergo to produce many additional copies of themselves?

answered Jan 6 in Science

1 answer 24 views

Seawalls and breakwaters are built parallel to what?

asked Dec 31, 2024 in Science

1 answer 8 views

Red giants are stars that fuse what element into larger atoms?

answered Dec 31, 2024 in Science

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