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ladessa [460]
4 years ago
15

A catalyst increases the rate of a reaction without being consumed. It accomplishes this by providing another mechanism that has

a lower activation energy.

Chemistry
1 answer:
sineoko [7]4 years ago
5 0

Answer: The given statement is true.

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, more collisions occur due to which there is rapid formation of products take place through another path.

Therefore, we can conclude that the statement a catalyst increases the rate of a reaction without being consumed. It accomplishes this by providing another mechanism that has a lower activation energy, is true.

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When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate int
sesenic [268]

Answer:

  • <em>The solution expected to contain the greatest number of solute particles is: </em><u>A) 1 L of 1.0 M NaCl</u>

Explanation:

The number of particles is calculated as:

a) <u>For Ionic compounds</u>:

  • molarity × volume in liters × number of ions per unit formula.

b) <u>For covalent compounds</u>:

  • molarity × volume in liters

The difference is a factor which is the number of particles resulting from the dissociation or ionization of one mole of the ionic compound.

So, calling M the molarity, you can write:

  • # of particles = M × liters × factor

This table show the calculations for the four solutions from the list of choices:

Compound    kind         Particles in solution  Molarity   # of particles

                                       (dissociation)              (M)          in 1 liter

A) NaCl          ionic            ions Na⁺ and Cl⁻        1.0            1.0 × 1 × 2 = 2

B) NaCl          ionic            ions Na⁺ anc Cl⁻        0.5           0.5 × 1 × 2 = 1

C) Glucose    covalent     molecules                   0.5          0.5 × 1 × 1 = 0.5

D) Glucose    covalent     molecules                   1.0           1.0 × 1  × 1 = 1

Therefore, the rank in increasing number of particles is for the list of solutions given is: C < B = D < A, which means that the solution expected to contain the greatest number of solute particles is the solution A) 1 L of 1.0 M NaCl.

8 0
3 years ago
17.g to mL<br> Density= 3.291g/mL
algol [13]
Density is defined as mass per unit volume 
therefore density = mass ÷ volume

volume = mass÷density
volume in ml = 17 ÷ 3.291
4 0
3 years ago
How many atoms does theobromine have
Roman55 [17]
The theobromine molecule contains a total of 22 bonds
5 0
3 years ago
If 3.85 mL of 10.0 M NaOH is used for a reaction, calculate the number of moles of NaOH that were used.
Lena [83]

The number of mole of NaOH that was used, given that 3.85 mL of 10.0 M NaOH is used in the reaction is 0.0385 mole

<h3>How do I determine the number of mole of NaOH?</h3>

We know that molarity is related to number of mole and volume according to the following formula:

Molarity = number of mole / Volume

With the above formula, we can determine the number of mole of NaOH. Details below

The following data were obtained from the question:

  • Volume = 3.85 mL = 3.85 / 1000 = 0.00385 L
  • Molarity = 10.0 M
  • Number of mole of NaOH =?

Molarity = number of mole / Volume

Cross multiply

Number of mole = molarity × volume

Number of mole of NaOH = 10 × 0.00385

Number of mole of NaOH = 0.0385 mole

Thus, the number of mole of NaOH is 0.0385 mole

Learn more about number of mole:

brainly.com/question/20522500

#SPJ1

4 0
2 years ago
PLEASE HELP Is this a redox reaction?<br><br> Zn + 2 HCl → ZnCl2 + H2
Alla [95]

Answer:

answer is #4

Explanation:

Zn^0 -------> Zn^2+  ,

H^1+ --------> H^0

3 0
3 years ago
Read 2 more answers
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