Chemistry, 15.04.2021 18:00, sweetyus06
This is Elvira and her toy car. She pushes the plastic toy car to set it in motion. Which force is NOTacting on the car? A. Pulling force from gravity B. Pushing force from her hand C. Magnetic force from the north pole D. Friction between the wheels and the surface
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Why is the melting of ice a physical change ?
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Chemistry, 22.06.2019 22:00, jlegrand9098
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
Chemistry, 23.06.2019 01:00, shartiarahoward
Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released
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This is Elvira and her toy car. She pushes the plastic toy car to set it in motion. Which force is N...
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