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Kazeer [188]
3 years ago
14

What is an Atom? What are the 5 most common elements that make up the human body?.

Chemistry
1 answer:
dalvyx [7]3 years ago
6 0
An atom is the smallest unit of ordinary matter that forms a chemical element.

oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
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Please help! Will mark Brainliest!
Elina [12.6K]
The answer is D ya know
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3 years ago
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Elena makes the table below to determine the number of atoms of each element in the chemical formula 3(NH4)2SO4
frozen [14]

Answer:

she should not have multiplied the sulfur atoms by the subscript 4

Explanation:

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Liquids and solids are referred to as "condensed phases" because the attractive forces cause molecules to become stationary. lea
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Answer:

leave little space between the molecules.

Explanation:

Matter is made up of small particles called molecules. These molecules present in matter are arranged inside its bulk.

In liquids and solids, the molecules are arranged very close together in such a way that there is only a little space between them. This is why liquids and solids are referred to as "condensed phases".

They are quite unlike gases where there is a lot of space between gas molecules.

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3 years ago
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You find a compound composed only of element "X" and hydrogen, and know that it is 91.26% element X by mass. Each molecule has 2
worty [1.4K]
Since you know the ratio of atoms, you can start to put a formula togeter. The formula might look like:<span>
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X3H8<span>so the ratio of 1:2.67 is still maintained. The mass percent tells you that out of every 100g of compound, 91.26g is element X, so the other 8.74g must be H. Dividing each mass by the number of moles in the formula gets us the molar mass of each element (approximately). DIviding 8.74g by 8 gets 1.09, roughly the molar mass of hydrogen. Dividing 91.26g by 3 gets us 30.4, roughly the molar mass of phosphorus. Element X is most likely phosphorus</span>
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3 years ago
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Convert 3.2 ft^2 to square inches
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460.8 square inches

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3 years ago
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