Plz
a group of students performed an experiment to prove the law of conservation of ene...
Plz
a group of students performed an experiment to prove the law of conservation of energy. in the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. the table shows a partial record of the temperature of the water before and after shaking.
experimental record
temperature
before shaking 21 °c
after shaking unknown
what best predicts the unknown temperature? (3 points)
less than 21 °c because heat energy is formed from the energy used in shaking
greater than 21 °c because heat energy is formed from the energy used in shaking
less than 21 °c, because the total energy of the system after shaking is higher than before shaking
greater than 21 °c, because the total energy of the system after shaking is higher than before shaking
9.
(01.04 hc)
the table shows the potential energy and kinetic energy of a skier at two different positions on a hill.
position and energy
position (above ground) kinetic energy potential energy
100 meters 0 units 50,000 units
60 meters ? 30,000 units
what is the kinetic energy of the skier at a height of 60 meters above ground? (3 points)
20,000 units, because total energy remains unchanged
80,000 units, because total energy remains unchanged
20,000 units, because total energy of the skier decreases
80,000 units, because total energy of the skier decreases
Answers: 1
Chemistry, 22.06.2019 00:30, TMeansStupidity
Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.
Answers: 1
Chemistry, 22.06.2019 19:30, xxaurorabluexx
Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.
Answers: 2
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If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms
Answers: 1
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