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lakkis [162]
3 years ago
6

When rocks return to the Earth's mantle, they can eventually melt and become magma. _______ and _______ are the main factors tha

t control this change.
Chemistry
2 answers:
max2010maxim [7]3 years ago
7 0

the answer is (A) Pressure and Heat

gogolik [260]3 years ago
6 0
When rocks returns to the Earth's mantle, they can eventually melt and become magma. Heat and Pressure are the main factors that controls this change
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GarryVolchara [31]
I believe the third choice is correct.

This can be proven by the fact that to find the molar mass of a compound, you simply add the molar masses of all the atoms within the compound

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lianna [129]
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What is the mass of 1.2 x 1023 atoms of arsenic?
Gre4nikov [31]

Answer:

14.93 g

Explanation:

First we <u>convert 1.2 x 10²³ atoms of arsenic (As) into moles</u>, using <em>Avogadro's number</em>:

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Then we can<u> calculate the mass of 0.199 moles of arsenic</u>, using its<em> molar mass</em>:

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Thus, 1.2x10²³ atoms of arsenic weigh 14.93 grams.

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