Catalysts increase reaction rates by lowering the activation energy of a reaction.

Chemistry

2 answers:

Zielflug [23.3K]3 years ago

8 0

That is 100% correct it is A!!!!
Hoped that helped u!
:D

Setler [38]3 years ago

4 0

The answer is true, catalysts increase rates by lowering the activation energy of a reaction. Catalysts lower the reaction energy and so the reaction occurs faster. Enzymes perform the role of biological catalysts. Most metabolic pathways of the body are controlled by enzymes. Enzymes by classification are proteins.

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Define atmpospheric pressure

krok68 [10]

Answer:

that pressure is called atmospheric pressure or air pressure. It is the force exerted on a surface by the air above is as gravity pulls it to earth. atmospheric pressure is commonly measured with a barometer. In a barometer , a column of mercury is a glass tube rises ot falls as the weight of the atmospheric changes

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3 years ago

The electron configuration can also be represented by writing the symbol for the occupied subshell and adding a superscript to i

Gwar [14]

Answer:

the electron configuration for P iin complete form in order of increasing orbital energy is: 1s² 2s² 2p⁶ 3s² 3p³

Explanation:

As stated, writing the symbol for the occupied subshell and adding a superscript to indicate the number of electrons in that subshell is a common way to represent the electron configuration of the atoms.

There are several rules that you have to follow to write such electron configurations. I will explain the needed to write the electron configuration for the atoms of P (phosphorus) in the requested form.

1) First, determine the number of electrons of the atom:

Use the atomic number. Phosphorus has atomic number 15.
The atomic number is the number of protons. So, phosphorus has 15 protons.
A neutral atom has the same number of electrons than protons. So, phosphorus atoms have 15 electrons.

2) Fill the orbitals in order of incrasing orbital energy

Aufbau rules are very helpful. As per it this is the order of the orbitals:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ ...

15 electrons ⇒ 1s² 2s² 2p⁶ 3s² 3p³
Check the number of electrons: 2 + 2 + 6 + 2 + 3 = 15
Hence, that is the electron configuration for P iin complete form in order of increasing orbital energy.

3) Other rules that you must consult to deal with some special issues of the electron configurations are: the exclusion principle of Pauli and the Hund's rule, but they are beyond the interest of this question.

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3 years ago

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marta [7]

Answer:

Explanation:

Because it is a cold winter night making the lake freeze and the bottle is already solid.

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3 years ago

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Explanation:

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The combined gas law is expressed mathematically as;

$\frac{P_{1} }{T_{1} } = \frac{P_{2} }{T_{2} }$