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No such molecule as 'h2o' ..

If you mean 'H2O', then it is water.

NB When writing chemical elemental symbols, single letter symbols are ALWAYS a CAPITAL letter.

Hence, hydrogen is 'H' not 'h' and oxygen is 'O' not 'o'

This is the international IUPAC standard as shown in the Periodic Table.

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lenpollock

Lvl 17
3mo ago

What else can I help you with?