Question

Suppose that every person in the world (about
6 billion people in all) were employed as an
atom counter. Each person would work a 40 hour week and be able to count one atom per
second. How long would it take for 6 billion people to count the hydrogen atoms in 4.4 lb of hydrogen?
Answer in units of years

Answer 1

I know that 4.4 lbs of hydrogen atoms would weigh 1.201901904E27atoms.

Answer 2

4.4 lbs of Hydrogen atoms weight 11.91939950055556* 10^23 and
No.of atoms that, 6 billion peoples will count in a year working 40 Hours a week is 4.5187200* 10^16 so the by dividing these two the answer would be 2.637782270323356 * 10^13 years or 26377822703233.56 years which is approximately 2640 billion years.