How many molecules are in a mole of h2o

According to this relationship, every mole has 6.022⋅1023 atoms (or molecules, depending on the substance). Since water is a molecule, 1 mole of water will always have 6.022⋅1023 molecules of water.

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when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

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