Answer:
I think it's C
Explanation:
i think its c b3cause when you guess c always feels right
The awnser is A :)
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Answer: A) True
Explanation: The difference in energy levels in an atom is responsible for the emission of photons. Emitted photons have different energies because energy levels are discrete. The energy of a photon gives information about its frequency and subsequently, its colour.
As the two gases (Hydrogen & Helium) are distinctively different gases with different discrete energy levels in their atoms, it is logical that the frequency and colour of the emitted photons from their respective atoms would be different.
When the parallel light rays exit a convex lens, it comes away or diverge.
If you spill a chemical on you, you should call poison control or 911
