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Andreas93 [3]
3 years ago
5

The following phase diagram shows how a catalyst affected the rate of a reaction.

Chemistry
2 answers:
Maslowich3 years ago
8 0
The correct  answer is C
Oduvanchick [21]3 years ago
5 0

Answer:

The correct answer is "The catalyst decreased the activation energy of the reactants."

Explanation:

Activation energy is the minimum energy required to start a reaction. A catalyst lowers the activation energy of a reaction. Here the catalyst lowers the activation energy of the reactant, thus making it easier to start to the reaction. In the absence of a catalyst the activation energy of the reactant will be higher.

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A hydrogen atom in an excited state can be ionized with less energy than when it is in its ground state. What is n for a hydroge
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Explanation:

It is known that formula for the ionization energy of hydrogen atom is as follows.

               E = \frac{13.6 eV}{n^{2}}

or,          n = \sqrt{\frac{13.6}{E}}

The value of energy is given as 0.544 eV. Therefore, we will calculate the value of n as follows.

                   n = \sqrt{\frac{13.6}{E}}

                      = \sqrt{\frac{13.6}{0.544 eV}}

                      = 5

Thus, we can conclude that n equals to 5 for a hydrogen atom if 0.544 eV of energy can ionize it.

5 0
2 years ago
How do you find the molar mass of a compound?
kobusy [5.1K]

Answer:The molar mass of a compound cab be find by adding up all the molar mass of the element present in the compound... Check the image for more clarification

Explanation:

8 0
3 years ago
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Rudik [331]

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Explanation: If pressure remains constant, then V/T = constant.

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and T2 = T1· V2 / V1 = 200 K · 500 ml / 300 ml = 285,7 K

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krek1111 [17]
The answer is C

I hope that helped
5 0
2 years ago
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