How many moles of cacl2 are needed to make 0.250 liters of 2.250m solution

.562 mol (with respect to signifigant figures)

Explanation:

to find moles we must use concentration to cancel liters.

2.250 mol/L x .250 L = .5625 mol

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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