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jarptica [38.1K]
2 years ago
10

How is the sun the major source of energy in the water cycle?

Chemistry
1 answer:
adoni [48]2 years ago
6 0

Answer:

The sun is a major source of the water cycle because the solar energy drives the cycle by evaporating water from the oceans,lakes rivers and even soil  

Explanation: I know this answer because I used to study it and I  got an A on the quiz. I also know this is the right answer because its also in a book that u could look stuff like that in a book.

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The heat of combustion of ethane is -337.0kcal at 25 degrees celsius. what is the heat of the reaction when 3g of ethane is burn
Ghella [55]

Answer:

Q = -33.6kcal .

Explanation:

Hello there!

In this case, according to the equation for the calculation of the total heat of reaction when a fixed mass of a fuel like ethane is burnt, we can write:

Q=n*\Delta _cH

Whereas n stands for the moles and the other term for the enthalpy of combustion. Thus, for the required total heat of reaction, we first compute the moles of ethane in 3 g as shown below:

n=3g*\frac{1mol}{30.08g}=0.1mol

Next, we understand that -337.0kcal is the heat released by the combustion of 1 mole of ethane, therefore, to compute Q, we proceed as follows:

Q=0.1mol*-337.0\frac{kcal}{mol}\\\\Q=-33.6kcal

Best regards!

8 0
2 years ago
Which ion in the ground state has the same electron configuration as an atom of
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Answer:

Ca^+2

Explanation:

Hence, the correct option is A.

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Answer:a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.

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