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Marina86 [1]
3 years ago
13

How much heat energy is required to raise the temperature of 200 grams of water from 25 degrees to 100 degrees?

Chemistry
1 answer:
Katen [24]3 years ago
5 0
You have to specify degrees Celsius or Fahrenheit?

Celsius will be 15000 <u>calories</u> or 62700 <u>joules</u>
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Hey buddy, here is your answer. Hope it helps you.

Explanation:

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According to model 1, how many grams of grass does herbivore a eat each day?
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8 0
3 years ago
We know that for a given reaction when the temperature increases from 100 k to 200 k the rate constant doubles. What is the acti
Alenkasestr [34]

Answer:

The activation energy of the reaction is 1.152 kJ/mol.

Explanation:

Activation energy is the minimum amount which is absorbed by the reactant molecules to undergo chemical reaction.

Initial temperature of reaction = T_1=100 K

Final temperature of reaction = T_2=200 K

Initial rate of the reaction at 100 k = K_1=k

Final rate of the reaction at 200 k = K_2=2k

Activation energy is calculated from the formula:

\log\frac{K_2}{K_1}=\frac{E_a}{2.303\times R}(\frac{T_2-T_1}{T_1T_2})

R = Universal gas constant = 8.314 J/ K mol

\log\frac{2k}{k}=\frac{E_a}{2.303\times 8.314 J/K mol}(\frac{200 K-100K}{200 K\times 100K})

E_a=1,152.772 J/mol=1.152 kJ/mol

5 0
3 years ago
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