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dolphi86 [110]
4 years ago
6

Enzymes make reactions MUCH easier and/or faster by

Chemistry
1 answer:
zimovet [89]4 years ago
3 0

Answer:

A is correct...B and C wrong I believe

Explanation:

So basically the reason A should be correct is because all enzymes do is provide alternative mechanisms for reaction to proceed and in that alternative mechanism the activation energy is lowered allowing the reactions to progress at greater speeds.

So A makes sense because The aerodynamic shape of a car, like an enzyme, does not supply energy to the car, but it can make it easier for the car to move (basically like an enzyme the car's shape is allowing the car to move faster... enzymes are not consumed in a reaction; they simply help it to occur.)

B is not correct because enzymes do not provide energy for reaction to occur. All they provide is an alternate mechanism where the activation energy is lowered so the reactions can occur at greater rate.

C is not correct because some reactions can occur without enzymes its just that they will occur at a much slower speed.

Hope this helps! I think this should be correct plz double check with your friends.

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Classify the following reaction *
hichkok12 [17]

Answer:

double replacement

Explanation:

The reaction equation is given as:

       Pb(NO₃)₂  +  2KI   →   PbI₂ +   KNO₃

This reaction is a double displacement reaction.

In this form of reaction, there is an actual exchange of partners to form new compounds.

      AB + CD →  AD + CD

One of the following condition serves as driving force for the reaction:

  • formation of an insoluble compound
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  • liberation of a gaseous product.
5 0
3 years ago
Explain the solute and the solvent in a solution
romanna [79]

Answer:

a solute is a substance that is dissolved in the solvent (liquid)

a solvent is a substance that dissolves a solute (solid)

a solution is the mixture of both the solute and solvent forming uniform mixture

5 0
3 years ago
How is chemical balanced maintained?
NikAS [45]

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4 0
4 years ago
Read 2 more answers
Solution a is a 1.0 m solution with a nonionic solute and water as the solvent. solution b is a 1.0 m solution with the same non
solniwko [45]
<span>The solution of ethanol will have the greatest increase in boiling point.
   The formula for boiling point elevation is:
 Î”Tb = Kb · bB
 where
 Î”Tb = boiling point elevation
 Kb = ebullioscopic constant for the solvent
 bB = molarity of the solution
   Since in the solute is nonionic, we don't have to worry about the molecules of the solute breaking up into multiple ions, thereby increasing the effective molarity of the solution. So which ever solvent has the highest ebullioscopic constant, will have the greatest increase in boiling point. This constant can be calculated by the equation:
 Kb = RTb^2M/ΔHv
 where
 R = Ideal gas constant
 Tb = boiling point of pure solvent
 M = Molar mass of solvent
 Î”Hv = heat of vaporization per mole of solvent
   For our purposes, we can ignore the idea gas constant, and instead look at only the boiling point, molar mass, and heat of vaporization. Then calculate Tb^2M/ΔHv So let's do so:
 (Note: Not bothering to be precise in molar mass. If the end result is close, then I'll bother. Otherwise, just using nice round numbers).
   Water
 Boiling point: 373.15 K
 Molar mass: 18 g/mol
 heat of vaporization: 40660 J/mol
 Tb^2M/ΔHv: 61.64
   Ethanol
 Boiling point: 351.52 K
 Molar mass: 46 g/mol
 heat of vaporization: 38600 J/mol
 Tb^2M/ΔHv: 147.26
   The value of Tb^2M/ΔHv is significantly greater for ethanol than it is for water (by more than 2 to 1), so it will have the greatest increase in boiling point.</span>
4 0
3 years ago
Read 2 more answers
At 1000 K the Kc value for the following reaction is 1.5 × 10⁶ (1) N₂O₄ (g) ⇌ 2 NO₂ (g) At 1000 K the Kc value for the following
Ahat [919]

Answer:

The value of Kc is 9.33 * 10^-17

Explanation:

Step 1: Data given

Temperature = 1000 K

N₂O₄ (g) ⇌ 2 NO₂ (g) Kc = 1.5 * 10^6

N₂ (g) + 2 O₂(g) ⇌ 2 NO₂ (g)  Kc = 1.4 * 10^-10

Step 2: Calculate Kc for  N₂ (g) + 2 O₂ ⇌ N₂O₄

N₂O₄ (g) ⇌ 2 NO₂ (g) Kc = 1.5 * 10^6

2 NO₂ (g) ⇌  N₂O₄ (g)    = 1/Kc = 1 / 1.5 * 10^6   = 6.67 *10^-7

N₂ (g) + 2 O₂(g) ⇌ 2 NO₂ (g)  Kc = 1.4 * 10^-10

Kc = Kc1 * Kc2

Kc = (6.67 *10^-7) * (1.4 * 10^-10)

Kc = 9.33 * 10 ^-17

The value of Kc is 9.33 * 10^-17

4 0
3 years ago
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