A water tank holds 100L of water. When the tap is opened, the number of litres in the tank after t minutes can be modelled by the function V = 100 / (t + 1)

Question

According to this model, when will the tank be empty

Answer 1

1 ml of H20 = 1.0004 x 10^23 atoms

after 101 minutes, the tank has 1 Liter left

after 201, 1/2 Liter

after 401, 1/4 Liter

after an infinite number of minutes, the tank approaches, but never reaches empty

But once it's down to 1 atom, it's effectively zero Liters, as it may lose that last atom in any minute.

that happens about in about 1.9 x 10^22 years, if you calculate this is calculated correctly.

= about 1,900,000,000,000,000,000,000 years = in about 2 sextillion years, give or take a few trillion years or so, but who's really counting past our national debt?