What is the most abundant chemical compound on earth?

Answer 1

It is unknown, but it is probably a magnesium silicate known as post-perovskite (MgSiO3). It is composed of the prime oxide constituents of the Earth's rocky mantle, magnesium oxide and silicon dioxide. You may think water is more common, but even the oceans which we think of as unfathomably deep make for an incredibly thin layer of the planet compared to its diameter.

Answer 2

Your question, without a descriptor for your word earth, can be answered in many ways.

Here is an answer for the earth's crust:

Silicon dioxide

SiO2

42.86% (by weight)

You can read more, below.

Answer 3

The most occurring compound ( if I had to guess) would be good old water. Two molecules of hydrogen and one of oxygen. Most of earth is covered with water after all.

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It is - but most of the planet's volume is rock!

Answer 4

Cellulose is the most abundant organic compound on earth.

Answer 5

The most common mineral on the Earth's surface is silicon dioxide, however the core of the earth is mostly comoposed of iron.

Answer 6

water

Answer 7

The most abundant chemical compound on earth is hydrogen. It is in water, and since water covers 70% of earth's surface, this makes it the most abundant chemical compound on earth.

Answer 8

Water (H2O) is the most abundant chemical compound on Earth, covering about 70% of the planet's surface.

Answer 9

water