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Dvinal [7]
3 years ago
11

Help me

Chemistry
2 answers:
SashulF [63]3 years ago
7 0
South American because when you look in the plate it forms a boundary
Valentin [98]3 years ago
6 0

Answer:

South American

Explanation:

When you look at a map of plates, only South American forms a boundary with the African plate out of those specific plates

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Which of the following is a type of kinetic energy.
dexar [7]
Kinetic energy is energy in motion. B, a rolling ball would be your answer because a rolling ball is energy that is moving. The rest of the answers are wrong because the actions do not use kinetic energy.
6 0
2 years ago
What is the approximate percentage of nitrogen in<br> the Earth's current atmosphere?
RoseWind [281]

Answer:

78% nitrogen

Explanation:

It has been long agreed upon that our atmosphere is highly abundant with nitrogen. Our atmosphere is composed of  78% nitrogen and then other gases follow such as 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements.

7 0
2 years ago
Calculate the volume of this irregular solid to the nearest cubic centimeter​
EleoNora [17]

Answer:

8 cm3

Explanation:

The volume of this irregular solid will calculated as the difference between the final volume and the initial volume;

The final volume of the water and the solid is 25 ml

The initial volume of the water alone was 17 ml

The volume of the irregular solid is thus approximately;

25 - 17 = 8 ml

We then use the conversion;

1 cm3 = 1 mL

Thus the volume of the solid is 8 cm3

6 0
3 years ago
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Explain, in your own words, why different elements produce different colors of light when heated.
fgiga [73]
Different elements produce different colors of light when heated because the electrons in these elements have different permissible energy levels. When an element is heated, the electrons inside it become excited and move to an higher energy level from the ground state. When the electrons drop from this higher energy level, they typically emit energy quantum, the color of the light that is observed at this stage depends on difference that exist in the two energy levels.<span />
7 0
2 years ago
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Are there more metals or nonmetals on the periodic table?
bogdanovich [222]

Answer:yes

Explanation:

I think so

6 0
3 years ago
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