Chemistry, 27.01.2021 02:00 carelee7496
The speed of light is 3.00 x 108 m/sec. Suppose a photon is sent from a distant object to a sensor on the Earth's surface. If the photon traveled for 2.85 sec, how many miles away is the distant object?
Answers: 2
Chemistry, 22.06.2019 05:30
What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion
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Chemistry, 22.06.2019 14:00
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
Answers: 1
Chemistry, 22.06.2019 15:00
Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.
Answers: 2
Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
Answers: 1
The speed of light is 3.00 x 108 m/sec. Suppose a photon is sent from a distant object to a sensor o...
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