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3 years ago

Which answer accurately describes the difference between speed and velocity?

Chemistry

2 answers:

olga55 [171]3 years ago

6 0

i just took the test and it said that this is the answer

Speed is the distance per unit of time. Velocity is the displacement per unit of time

irakobra [83]3 years ago

5 0

I think the correct answer from the choices listed above is the second option. The difference between speed and velocity would be that speed <span> requires distance. Velocity requires displacement. Speed only has a magnitude while velocity is a vector quantity which means it has direction and magnitude.</span>

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Answer:

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Explanation:

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3 years ago

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a student adds 3.5 moles of solute to enough water to make a 1500mL solution. what is the concentration?

aksik [14]

<h2>Hello!</h2>

The answer is:

$MolarConcentration=\frac{3.5moles}{volume(1.5L)}=2.33molar$

Since there is not information about the solute but only its mass, we need to assume that we are calculating the molar concentration of a solution or molarity. So, need to use the following formula:

$MolarConcentration=\frac{mass(solute)}{volume(solution)}$

Now, we know that the mass of the solute is equal 3.5 moles and the volume is equal to 1500 mL or 1.5L

Then, substituting into the equation, we have:

$MolarConcentration=\frac{3.5moles}{1.5L}=2.33molar$

Have a nice day!

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3 years ago

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2 years ago

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It is B on edge, iv just finished taking the quiz :)

Explanation:

Hope this helps! Let me know if you need anymore help:)

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3 years ago