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3 years ago

Which of the following best describes the result of using a catalyst in a chemical reaction?

Chemistry

2 answers:

elena-14-01-66 [18.8K]3 years ago

8 0

A catalyst only speed up a chemical reaction
D is correct

Rama09 [41]3 years ago

8 0

Answer: Option (D) is the correct answer.

Explanation:

A catalyst is defined as the substance that lowers the activation energy of a chemical reaction without itself getting consumed so that there will be increase in rate of reaction.

As catalyst lowers the activation energy so, reactant molecules with lower energy also participates in the reaction. Hence, morr collisions occur due to which there is rapid formation of products.

Thus, we can conclude that statement the reaction is completed in a shorter amount of time, best describes the result of using a catalyst in a chemical reaction.

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Improper or incomplete usage of citations can lead to

lys-0071 [83]

Improper or incomplete usage of citations can lead to plagiarism.

Without proper usage of citations, teachers or whoever is looking over your work, may think because you do not hold acceptable citations, that they will think it is plagiarized. Plagiarism is taking another person's work or ideas without citing it. Citation or direct quotation could save you from plagiarism.

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3 years ago

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Calculate the molarity of the acid solution.<br>H2SO4(aq) with a pH of 2.

Lena [83]

Concentration "molarity" of H₂SO₄ in this solution:

5 × 10⁻³ mol / dm³.

<h3>Explanation</h3>

What's the concentration of H⁺ ions in this solution?

$[\text{H}^{+}] = 10^{-\text{pH}}$ ,

where $[\text{H}^{+}]$ is in the unit mol / dm³.

$\text{pH} = 2$

$[\text{H}^{+}] = 10^{-2} \;\text{mol}\cdot\text{dm}^{-3}$ .

What's the concentration "molarity" of H₂SO₄ in this solution?

Sulfuric acid H₂SO₄ is a strong acid. Note the subscript "2". Each mole of this acid dissolves in water to produce two moles of H⁺ ions. It takes only $\dfrac{10^{-2}}{2} = 5 \times 10^{-3}\;\text{mol}\cdot\text{dm}^{-3}$ of H₂SO₄ to produce twice as much H⁺ ions.

As a result, the <em>molarity</em> of H₂SO₄ is 5 × 10⁻³ mol / dm³ or 0.005 M.

3 0

3 years ago

How would you male 2.0L of O.100M sulfurice acid from a 12.0M stock bottle of sulfurice acid Calc, sketch, and write a summary s

ozzi

<u>Answer:</u> The volume of stock solution needed is 0.016 L

<u>Explanation:</u>

To calculate the volume of stock solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the stock solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted solution

We are given:

$M_1=12M\\V_1=?L\\M_2=0.10M\\V_2=2L$

Putting values in above equation, we get:

$12\times V_1=0.1\times 2\\\\V_1=0.016L$

Hence, the volume of stock solution needed is 0.016 L

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3 years ago

What determines the chemical properties of minerals

german

The physical characteristics ofminerals include traits which are used to identify and describe mineralspecies. These traits include color, streak, luster, density, hardness, cleavage, fracture, tenacity, and crystal habit.

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3 years ago

How many carbon atoms will be in the longest chain of 2,2,4-trimethylpentane?

Bogdan [553]

We see in the given name of the hydrocarbon that the root word is pentane from 2,2,4-trimethylpentane. Pentane is a hydrocarbon chain that contains 5 carbon atoms. Therefore, the answer to this item is 5 carbons.

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3 years ago

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