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Leokris [45]
3 years ago
8

One of the major ways humans depend on marine plants is for which of the following?

Chemistry
2 answers:
nadezda [96]3 years ago
7 0

Answer:

C .

Explanation:

vazorg [7]3 years ago
6 0
A. Production of oxygen
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Which of the following groups have seven valence electrons and are very reactive?
valina [46]

Answer:

Column 17 halogens

Explanation:

To answer the question we need to know the following;

What are valence electrons?

  • Valence electrons are outermost electrons in the outermost energy level of an atom of any element.

What are halogens?

  • Halogens are group 7 elements that have seven valence electrons. They include, chlorine, fluorine, iodine, etc

What is the reactivity of halogens?

  • Halogens are the most reactive non-metals in the periodic table. They react by gaining one electron to attain a stable configuration.
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Explanation:

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heat energy are absorbed by water molecules and it is used to change the molecules from liquid to gas? if thats what your asking.

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Answer:

75300g

Explanation:

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