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zhannawk [14.2K]
3 years ago
13

Big question for physicists out there:How can we be sure dark matter actually exists in our universe?

Chemistry
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

We can see the bright matter, like stars, but we know some other matter is there(dark matter)because of how it pulls on the bright matter.

Explanation:

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Which is a spectator ion in the reaction between these two solutions?
defon

Im not sure what it is but i will try      

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Ba²⁺(aq) + 2Cl⁻(aq) + 2Na⁺(aq) + SO₄²⁻(aq) = BaSO₄(s) + 2Na⁺(aq) + 2Cl⁻(aq)

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Answer:

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Explanation:

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3 years ago
An atom in its lowest possible energy state is said to be in the
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Explanation:

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