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Gemiola [76]
4 years ago
14

Someone please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
OLga [1]4 years ago
5 0

Answer:

1 - B

2 - C

3 - A

4 - D

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Water is the universal solvent and we have seen how salts, like NaCl, dissolve in water. Many other molecules dissolve in water
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Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

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Which of the following is not among the advantages of generating nuclear energy?
WARRIOR [948]

B

While nuclear energy does not pollute the environment, it poses the risk of radiation which is harmful to organisms because it causes lethal mutations.

Explanation:

Nuclear fission, for example, releases neutrons and other particles (at very high speeds) that can ionize materials including DNA. This will induce mutations of DNA most of which are usually lethal to organisms. Gamma and X- rays are also produced by fusion reactions and  if exposed to organisms also cause mutations on DNA through double stranded breaks. Therefore, the risk of an accident of a nuclear reactor can have immense ramifications on the ecosystems.

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3 years ago
Which part of John Dalton theory is no longer accepted today
makkiz [27]

The indivisibility of an atom was proved wrong and no longer accepted today.

<h3>What is an atom?</h3>

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The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons.

Hence, an atom is the smallest particle that takes part in chemical reactions.

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