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victus00 [196]
2 years ago
4

catalysts are molecules that lower the activation energy for a given reaction. what is the specific term used for biological cat

alysts?
Chemistry
1 answer:
Alchen [17]2 years ago
8 0

Catalysts are molecules that lower the activation energy for a given reaction. The specific term used for biological catalysts is Enzymes.

<h3>What is catalyst? </h3>

A catalyst is defined as a substance which increase the rate of the reaction chemical reaction, and lowers the pressure and temperature which are needed to start one, in such a way that it doesn't take participate in the reaction.

<h3>What is Activation energy? </h3>

Activation energy is the minimum amount of energy which must be needed by the compounds foe the production in a chemical reaction. The activation energy of chemical reaction is mainly measured in joules per mole, kilocalories per mole or in kilojoules per mole.

<h3>What are Enzymes? </h3>

Enzymes are the chemical catalysts which accelerate the chemical reactions at the physiological temperatures by decreasing their activation energy.

Thus, we concluded that the biological Catalysts that lower the activation energy for a given reaction is Enzymes.

learn more about Catalyst:

brainly.com/question/18959742

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Which chemical reaction shows photosynthesis?
Komok [63]

Answer:

A

Explanation:

Photosynthesis is reverse combustion, thus, water and carbon dioxide should be reactants. Photosynthesis also needs sunlight, so A it is.

6 0
3 years ago
The table shows the amount of radioactive element remaining in a sample over a period of time.
Lunna [17]

Answer:

1. The half-life is 22 years.

2. 132 years

Explanation:

1. Determination of the the half-life.

The half-life of an element is the time taken for half the element to decay.

From the table given above, the original amount of the element 45 g. If we divide 45 by 2, we'll have 22.5 g as half the original amount of element.

Now, the time taken to obtain 22.5 g as shown from the table is 22 years.

Thus, the half-life the element is 22 years.

2. Determination of the time.

Original amount (N₀) = 308 g

Amount remaining (N) = 4.8125 g

Time (t) =?

Next, we shall the number of half-lives that has elapsed. This can be obtained as follow:

Original amount (N₀) = 308 g

Amount remaining (N) = 4.8125 g

Number of half-lives (n) =?

N = 1/2ⁿ × N₀

4.8125 = 1/2ⁿ × 308

Cross multiply

4.8125 × 2ⁿ = 308

Divide both side by 4.8125

2ⁿ = 308 / 4.8125

2ⁿ = 64

Express 64 in index form with 2 as the base.

2ⁿ = 2⁶

n = 6

Thus, 6 half-lives has elapsed.

Finally, we shall determine the time. This can be obtained as follow:

Number of half-lives (n) = 6

Half-life (t½) = 22 years

Time (t) =?

n = t / t½

6= t / 22 years

Cross multiply

t = 6 ×22

t = 132 years.

Thus, the time taken is 132 years.

6 0
3 years ago
A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L . If the temperature changes to 70 ∘C ,
bixtya [17]

Answer:

1528.3L

Explanation:

To solve this problem we should know this formula:

V₁ / T₁ = V₂ / T₂

We must convert the values of T° to Absolute T° (T° in K)

21°C + 273 = 294K

70°C + 273 = 343K

Now we can replace the data

1310L / 294K = V₂ / 343K

V₂ = (1310L / 294K) . 343K → 1528.3L

If the pressure keeps on constant, volume is modified directly proportional to absolute temperature. As T° has increased, the volume increased too

7 0
4 years ago
Write the chemical formula for the ionic compound formed by lithium and fluorine.
aev [14]

Answer:

→<u> </u><u>LiF</u>

Explanation:

{ \rm{2Li _{(s)}  + F _{2(g)} \dashrightarrow \: 2LiF _{(s)}  }}

3 0
3 years ago
What causes valley air to move up surrounding mountains during the day?
AleksandrR [38]

Answer:

so the third one

Explanation:

During the day, the sun heats up mountain air rapidly while the valley remains relatively cooler. Convection causes it to rise, causing a valley breeze. At night, the process is reversed. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind.

7 0
3 years ago
Read 2 more answers
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