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aleksandr82 [10.1K]
3 years ago
7

Which of the following statements about enzymes is true?. a. Enzymes are able to heat up molecules so that they can react.. b. E

nzymes always provide carbon dioxide for chemical reactions.. c. Enzymes are biological catalysts which act on a substrate.. d. Enzymes absorb excess heat so that reactions occur at low temperatures.
Chemistry
2 answers:
stepladder [879]3 years ago
7 0
"<span>Enzymes are biological catalysts which act on a substrate" is the statement among the statements given in the question that is true about enzymes. The correct option among all the options that are given in the question is the third option or option "c". I hope that the answer has come to your help.</span>
taurus [48]3 years ago
5 0
The answer is C as enzymes are biological catalysts that act on a substrate such as starch if the enzyme were amylase

hope that helps 
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1. Calculate the average reaction rate expressed in moles H2 consumed per liter per second.
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Answer:

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2) 0.0025 mol/L.s.

Explanation:

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<em>H₂ + Cl₂ → 2HCl.</em>

<em></em>

<em>The average reaction rate = - Δ[H₂]/Δt = - Δ[Cl₂]/Δt = 1/2 Δ[HCl]/Δt</em>

<em></em>

<em>1. Calculate the average reaction rate expressed in moles H₂ consumed per liter per second.</em>

<em></em>

The average reaction rate expressed in moles H₂ consumed per liter per second = - Δ[H₂]/Δt = - (0.02 M - 0.03 M)/(4.0 s) = 0.0025 mol/L.s.

<em>2. Calculate the average reaction rate expressed in moles CI₂ consumed per liter per second.</em>

<em></em>

The average reaction rate expressed in moles Cl₂ consumed per liter per second = - Δ[Cl₂]/Δt = - (0.04 M - 0.05 M)/(4.0 s) = 0.0025 mol/L.s.

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