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Elden [556K]
3 years ago
14

HURRY I HAVE 5 min. Why does the Richter scale not necessarily tell us anything about the physical effects of an earthquake?

Chemistry
1 answer:
zimovet [89]3 years ago
5 0
Old I just have to answer question
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2C4H10 + 13 02 -- 8 CO2 + 10H20
Anika [276]

Answer:

Option 1. 0.55 mol of C₄H₁₀

Explanation:

The reaction is:

2C₄H₁₀ + 13O₂ → 8 CO₂ + 10H₂O

This is a combustion reaction where carbon dioxide and water are produced.

We convert mass of produced water to moles → 50 g / 18 g/mol = 2.78 moles of water.

The stoichometry states that:

10 moles of water are made by 2 moles of C₄H₁₀

Therefore 2.78 moles of water will be made by (2.78 . 2) / 10 = 0.55 mol of C₄H₁₀

4 0
3 years ago
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A chemical reaction that produces electricity would be.
Goshia [24]

Answer:

Exothermic

Explanation:

Exothermic describes a process or reaction that releases energy

8 0
2 years ago
Look at the graph. Which part of the line shows a time<br> when the object was not moving?
marysya [2.9K]

Answer:

\bold \blue{b)B}

hope it helps :)

7 0
2 years ago
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2. Which element below would be the best choice when creating a covalent molecule with an
sammy [17]

Answer:

The chemical elements most likely to form covalent bonds are those that share electrons, such as carbon, as opposed to those that take them from another element to form an ionic bond. In general, they are nonmetals with similar electronegativities.

Explanation:

3 0
3 years ago
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Which of the following breaks and forms bonds?
svp [43]
Your answer would be "Chemical Change"
7 0
3 years ago
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