How many moles are equivalent to 4.151 x 10^25 particles of lithium?

68.95moles

Explanation:

Given parameters:

Number of particles of lithium  = 4.151 x 10²⁵ particles

Unknown:

Number of moles  = ?

Solution:

From the mole concepts, we know that;

         6.02 x 10²³ particles are contained in 1 mole of a substance

          4.151 x 10²⁵ particles contains    = 68.95moles

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

hope this : )