What amount of substance are 100 grams of water.

The amount of substance (n) is found by the formula:
n = m / M, where m is the mass of the substance, M is the molar mass of the substance
Let’s find the molar mass of water:
M (H2O) = 2Ar (H) + Ar (O) = 2 + 16 = 18 g / mol
Now, we can find the amount of substance:
n = 100 g / 18 g / mol ≈ 5.56 mol



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