Chemistry, 25.09.2019 12:50 sydmarie02
Which statement about niels bohr’s atomic model is true?
a) higher orbits have lower energies
b) each orbit has a specific energy level
c) electrons can exist in any energy level
d) orbits close to the nucleus have no energy
Answers: 2
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Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Chemistry, 22.06.2019 13:00
What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.
Answers: 3
Which statement about niels bohr’s atomic model is true?
a) higher orbits have lower energie...
a) higher orbits have lower energie...
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