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joja [24]
2 years ago
8

What happens when light waves pass between two materials of different densities?

Chemistry
2 answers:
Musya8 [376]2 years ago
5 0

Answer:

The light bends

Explanation:

When it passes through two different densities it changes directions, causing a bend

velikii [3]2 years ago
4 0

Answer:

B

Explanation:

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Guess how many water molecules self-ionize in one liter of water! a) 7 moles b) 1 mole c) 10,000,000 moles d) 0.0000001 moles​
Rudiy27

Answer:

D)

Explanation:

This seems like a weird question

Water is held together by covalent bonds. The amount of energy required to break these bonds so that water would split into it's respective ions is pretty high. The chances that any one of the molecules floating in 1L of water get enough energy to spontaneously burst into it's ions is slim to none.

So, D) seems like the most likely answer

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In an electron dot diagram of propane (C3H8), how many double bonds are present?
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Explanations:- For naming hydrocarbons we use the suffix -ane, -ene and -yne.

-ane is used when we have only single bonds between all carbons. -ene is used if there is any double bond between two carbons and the -yne is used if there is any triple bond between two carbons.

The given name of the compound is propane. It ends at -ane and so it's an alkane and must have single bonds between all the carbons it has. So, there are zero double bonds present in C_3H_8 .

This is also clear from the below lewis dot structure of the compound.


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