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3 years ago

You have 3 L of a 5M solution of calcium chloride. How many L would you be able to make of a 0.5M solution?

Chemistry

1 answer:

san4es73 [151]3 years ago

3 0

Answer:

30.0 L.

Explanation:

To solve this problem; we must mention the rule states the no. of millimoles of a substance before and after dilution is the same.

(MV)before dilution = (MV)after dilution

M before dilution = 5.0 M, V before dilution = 3.0 L.

M after dilution = 0.5 M, V after dilution = ??? L.

∵ (MV)before dilution = (MV)after dilution

∴ (5.0 M)(3.0 L) = (0.5 M)(V after dilution)

∴ V after dilution = (5.0 M)(3.0 L)/(0.5 M) = 30.0 L.

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Answer:

Pretty sure the answer is A on Plato

Explanation:

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3 years ago

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Aliun [14]

Note the formula

$\boxed{\sf Mass\:no=No\:of\:protons+No\:of\:neutrons}$

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3 years ago

How many electrons does hydrogen need in order to have a full shell of valence electrons?

eimsori [14]

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2 years ago

A car travels at a speed of 80 km/h. Which of the following is correct to convert the speed of the car to hm/s? [1 km = 10 hm, 1

amm1812

Answer: The correct answer is Option D.

Explanation:

We are given that car travels with a speed of 80 km/hr and we need to convert it into hm/s.

For that we use the conversions:

1 kilometer = 10 hectometer

And, 1 hour = 3600 seconds

To convert the quantity into hm/s, we multiply the numerator which is 80 by 10 to convert the whole quantity into hm/hr and now, to convert the result into hm/s finally, we divide the result by 3600.

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3 years ago