chemistry
posted by Anonymous .
Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23 particles? Assume that there are 365 days in a year.

I worked that for you just half hour ago. I left the calculator work to you.
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