It means that it is in a liquid state as opposed to solid (ice) or gas (water vapour or steam)
The "l" subscript on H2O signifies that water is in its liquid state at room temperature and pressure.
the subscript g after H2O indicates that it is water vapour, a gas, which is what the subscript g stands for. If there was a subscript s after the H2O, it would mean that H2O is in a solid form as ice. If there was a subscript l it means that H2O is in the liquid form as water.
its solid state :0)
The subscript "g" in H2O indicates that the water molecule is in the gaseous state, meaning it exists as a gas.
If it's in the form H2O(l) then the l stands for liquid. This is to show that liquid water is different than gaseous water (steam), which would be H2O(g) with a g for gas.
The reaction is: CaO(s) + H2O(l)--- --> Ca(OH)2(s) Ca(OH)2(s) is the product (at the right side of the reaction equation).
eg. O2 (where the 2 is subscript) This shows that there are TWO INTRAMOLECULARLY-BONDED atoms, ie. two atoms joined together. Or, if you are referring to (g), (l), (s) and (aq) subscripts: (s) - solid (g) - gas (l) - liquid (aq) - aqueous, or dissolved in water
ctrl = for subscript ctrl shift = for superscript
2H2,g + O2,g --> H2Ol
You are not able to format a single character as subscript, but you can change the entire ledged text to subscript. Right-click on the ledged, select Font, and click on the Subscript option.
Not every chemical formula requires subscript. For example table salt is NaCl, sodium chloride. No subscript. But most chemical formulae do require subscript, such as water, H2O.
It is AlI3. The character after the A is a lower case L, the next one is an upper case i and the final number should be in subscript.