1: What if you replaced every molecule of water in the Earth's atmosphere with a full-grown gorilla?

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Brought up by someone in the IRC channel on January 23. Calculations done mostly by alexxerth, redone by coxj2000. Written by coxj2000 and alexxerth.

Short Answer[edit]

We would all die.

Long Answer[edit]

Roughly to scale.
I can't draw the universe exploding, so here's Bucket.

There are roughly 4.312212 * 10^41 molecules of water in the atmosphere. I don't know the exact ratio of atmospheric water molecules to gorillas, but needless to say, it's very high. According to Wikipedia, most adult male gorillas weigh between 135 to 180 kilograms. The average of those two numbers is around 158kg, which can be rounded up to 160kg for simplicity. Considering that gorillas are mostly water like humans, and water has a density of 1g/mL, it can be assumed that the average adult male gorilla takes up about 160 liters of space. When you multiply 4.312212 * 10^41 (the number of water molecules in the atmosphere) by 160 (the approximate volume, in liters, of the average adult male gorilla), you get about 6.8995392 * 10^43 liters of gorillas weighing about 6.8995392 * 10^43 kilograms. Needless to say, a sphere of these gorillas is much, much larger than the Earth, the sun, and the largest stars and black holes. These gorillas would be about ten times more massive than the Milky Way. Such a mass would be too big to be a black hole, and would likely not remain a sphere for long. Physics doesn't really know what would happen to this sphere. It's not unreasonable to say that it would break the universe.[citation needed]

Problems[edit]

What if the water molecules' gorillas are in the same place as the original water molecules?[edit]

No 4.312212 * 10^41 objects can't occupy the same space at the same time, and this would not make physics happy.

What if the water molecules in the gorillas further turned into gorillas, and it happened over and over again?[edit]

Physics doesn't know. If the original gorillas didn't ruin the universe for everybody, this certainly will.

What if we counted all of the water on Earth?[edit]

Calculating roughly, it'd be 25,000 times the mass of the Milky Way, and it wouldn't end well.

Conclusion[edit]

Suffice to say, if every molecule of water in our atmosphere turned into a gorilla, we would be incredibly dead.