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telo118 [61]
3 years ago
11

The minimum amount of energy needed to get a chemical reaction started is called the ___ energy.

Chemistry
2 answers:
OleMash [197]3 years ago
8 0
The minimum amount of energy needed to get a chemical reaction started is called the activation energy.

This energy is used to start a chemical reaction. 
VashaNatasha [74]3 years ago
6 0
<span>The minimum amount of energy needed to get a chemical reaction started is called the activation energy. </span>
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What is arranged to form a material with a crystal structure
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Explanation:

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5. A 5.00 g sample of an unknown substance was heated from 25.2 C to 55.1 degrees * C , and it required 133 to do so. Identify t
Leviafan [203]

Answer:

Aluminum

Explanation:

Given

T_1 = 25.2^oC

T_2 = 55.1^oC

m = 5.00g

\triangle Q= 133J

<em>See attachment for chart</em>

Required

Identify the unknown substance

To do this, we simply calculate the specific heat capacity from the given parameters using:

c = \frac{\triangle Q}{m\triangle T}

This gives:

c = \frac{\triangle Q}{m(T_2 - T_1)}

So, we have:

c = \frac{133J}{5.00g * (55.1C - 25.2C)}

c = \frac{133J}{5.00g * 29.9C}

c = \frac{133J}{149.5gC}

c = 0.89\ J/gC

From the attached chart, we have:

Al(s) = 0.89\ J/gC --- The specific heat capacity of Aluminum

<em>Hence, the unknown substance is Aluminum</em>

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What kind of change forms a chemical reaction?
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