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Shtirlitz [24]
3 years ago
14

Which scenario ensures that Earth’s global temperature is maintained?

Chemistry
2 answers:
Angelina_Jolie [31]3 years ago
3 0

Answer:

The energy that flows into the Earth system is equal to the energy that flows out of the Earth system.

Explanation:

Because I geussed it right

Sati [7]3 years ago
3 0

Answer:

it is B on edg

Explanation:

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Whose cell walls may contain cellulose can be plantlike, animal like or fungus
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I'm not sure

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What hydrocarbons burn completely in an excess of oxygen, the products are
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The right answer for the question that is being asked and shown above is that: "C) carbon monoxide and carbon dioxide" hydrocarbons burn completely in an excess of oxygen, the products are <span>C) carbon monoxide and carbon dioxide</span>
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How many orbitals are in the 5th energy level?
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Answer:7

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Methods used by scientists
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Answer:

scientific method

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3 years ago
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The activation energy for a reaction is changed from 184 kJ/mol to 60.5 kJ/mol at 600. K by the introduction of a catalyst. If t
Ahat [919]

Answer:

The catalyzed reaction will take 1,41 s

Explanation:

The rate constant for a reaction is:

k = A e^{-\frac{Ea}{RT}}

Assuming frequency factor is the same for both reactions (with and without catalyst) it is possible to obtain:

{\frac{k1}{k2}} = e^{-\frac{Ea_{2}-Ea_{1}}{RT}}

Replacing:

{\frac{k1}{k2}} = e^{-\frac{60,5kJ/mol-184kJ/mol}{8,314472x10^{-3}kJ/molK*600k}}

{\frac{k1}{k2}} = 5,64x10^{10}

That means the reaction occurs 5,64x10¹⁰ faster than the uncatalyzed reaction, that is 2537 years / 5,64x10¹⁰ = 4,50x10⁻⁸ years. In seconds:

4,50x10⁻⁸ years×\frac{365days}{1year}×\frac{24hours}{1day}×\frac{3600s}{1hour} =<em> 1,41 s</em>

I hope it helps!

6 0
3 years ago
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