In an automobile's catalytic converter,

1 answer:

5 0

The most of the pollutants (carbon monoxide, nitrogen monoxide and unburned hydrocarbons) are released from the car during the first one to two minutes after the car is started, and then decrease significantly after that, due to increasing the temperature which supply the system by heat that required to oxidize the released gases by increasing the rate of the chemical reaction.

Then, the correct answer is the temperature (B).

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Answer:- 47.62 mL

Solution:- It is a dilution problem where we are asked to calculate the volume of 15.75 M perchloric acid solution required to make 500.0 mL of 1.500 M solution.

For solving this type of problems we use the dilution equation:

$M_1V_1=M_2V_2$

Where, $M_1$ is the concentration of the concentrated solution and $V_1$ is it's volume.

$M_2$ is the concentration of the diluted solution and $V_2$ is it's volume. Let's plug in the values in the equation and solve it for $V_1$ .

$15.75M(V_1)=1.500M(500.0mL)$

On rearranging this for $V_1$ :

$V_1=\frac{1.500M(500.0mL)}{15.75M}$

$V_1=47.60mL$

So, 47.62 mL of 15.75 M perchloric acid are required to make 500.0mL of 1.500 M solution.

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I hope this helps! :D

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Select the correct answer.

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