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Vedmedyk [2.9K]
3 years ago
10

Which of the following lists elements from lowest to highest atomic number

Chemistry
1 answer:
vitfil [10]3 years ago
8 0
Lowest is Hydrogen highest is <span>Beryllium
-HOPE THIS HELPED </span>
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One atom of silicon can properly be combined in a compound with
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B. two atoms of oxygen
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Magnesium reacts steadily with hydrochloric acid
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3 years ago
Which chemical equation demonstrates the law of conservation of mass!
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Answer:

F. 2NO + 02 —> 2NO

H. 4NH3 + 502 —> 4NO + 6H20

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2NO + 02 —> 2NO

From the above, the total number of N on the left balance the total number on the right i.e 2 atoms of N on both side of the equation.

The total number of O on the left balance the total number on the right i.e 2 atoms of O on both side of the equation. This is certified by the law of conservation of mass.

4NH3 + 502 —> 4NO + 6H20

From the above, the total number of N on the left balance the total number on the right i.e 4 atoms of N on both side of the equation.

The total number of O on the left balance the total number on the right i.e 10 atoms of O on both side of the equation.

The total number of H on the left balance the total number on the right i.e 12 atoms of O on both side of the equation.

This is certified by the law of conservation of mass.

The rest equation did not conform to the law of conservation of mass as the atoms on the left side did not balance those on the right side

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