computation ,interactions, units, and magnitudes

2.1 How many atoms are there in a yoctomole

Avogadro number * 10^-24 = 0.6

1 century = 3.154x10^9 so one nano to 3.15 close to pi

2.2

1 DVD holds 4 GB and each dvd is 1.2mm and so for like 1 exabyte you need 0.3x10^9 meters is how tall the stack would be

2.3

There are 10^80 bits in the universe so you have a number 2^(10^80)