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How many water molecules are in the Earth's oceans?

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The total volume of all seas and oceans on the Earth is approximately 1.37*10^9 km^3 [1] .The density of seawater is on the average 1023.6 kg/m^3 [2] This means that the total mass of water in all oceans is 1.40*10^21 kg. The number of moles is then 7.8*10^22 mol. 1 mol contains 6. read more

number of glasses of water = volume of oceans / volume of a glass = (1.33*10^24) / 220 = 6.05*10^21. As you can see it’s relatively close, but it turns out that there are more molecules in one glass of water than glasses of water in all of the world’s oceans. However, our answer is dependent on the volume of a glass of water. read more

The total volume of all seas and oceans on the Earth is approximately 1.37*10^9 km^3 .The density of seawater is on the average 1023.6 kg/m^3 This means that the total mass of water in all oceans is 1.40*10^21 kg. read more

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