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PilotLPTM [1.2K]
3 years ago
9

Hardest question that nobody can answer about diffusion​

Chemistry
1 answer:
valkas [14]3 years ago
7 0

Is the movement of a substance from an area of high concentration to an area of low concentration

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Which statement describes a change that occurs during a chemical reaction? A. Atoms in the original substances are changed into
trapecia [35]

Answer:

B. Atoms in the original substances are arranged in a different way to make new substances.

Explanation:

The best statement that describes a change that occurs in a chemical reaction is that atoms in the original substances are arranged in a different way to make new substances.

  • Chemical reactions obey the law of conservation of matter.
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3 years ago
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When the sun shines and heats something, that energy is called-
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Solar energy.

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A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one ele
liubo4ka [24]

Answer:

A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one electron. The potassium ion that forms has 18 electrons. What best describes the bromide ion that forms? It is a negative ion that has one more valence electron than a neutral bromine atom.

Explanation:

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If star a appears to move back and forth by a greater amount than star b, which star is closer to you?
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If Star A appears to move back and forth by a greater amount than Star B, which star do you think is actually closer to you? Star A. If the parallax angle for a star is 1 arcsecond, what is the distance from the Sun to that star

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