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 lb of a hydrogen is 1.201901904e+27atoms

Answer 2

Also know the mass of a hydrogen atom is 1.67 ×
10−27 kg. but i need to use it to find 15 hydrogen atoms and multiply it by the earths gravity=9.8m/s2. and i got 2.4549E-25N.

Answer 3

still am not sure how to find the years need for the people

Answer 4

You have 4.4 lbs of H2 which is 2 Kg. There ar 6.02e23 atoms per gram molecular wgt.(Mole). you have 1000 moles of H2. thus there are 6.02e25 molecules. Remember H molecules have two H atoms so really everybody is counting by twos.

Any way it will take ? billion of years.