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alexira [117]
3 years ago
12

Which two chemical elements make up earths atmosphere

Chemistry
1 answer:
Lera25 [3.4K]3 years ago
7 0

Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements. Our atmosphere also contains water vapor.

hope this helps!

(:

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The graph shows the volume of a gaseous product formed during two trials of a reaction. A different concentration of reactant wa
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A: Trial 1, because the average rate of the reaction is lower.

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If we look at the graph, we will realize that trial 1 produces a lesser amount of product than trial 2. This implies that the  average rate of the reaction in trial 1 is lower than in trial 2.

Lower average rate of reaction implies lower concentration of the reactants since the rate of reaction depends on the concentration of reactants.

Hence trial 1 has a lower concentration of reactants because the average rate of the reaction is lower.

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Explanation:

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5. Forces (or actions) always come in pairs. They<br> are____and_____
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