Question

state the formula,name and physical state of CO2+H2O

Answer 1

carbon di oxide + hydrogen di oxide
these both are gases
and in presence of sonlight react to form glucose and o2

Answer 2

Chemical Formulas are a type of shorthand for representing the elements in a compound. Element Symbols are included on the Periodic Table. Chemical symbols (Element symbols) from the periodic table are used for the individual elements e.g. H for hydrogen, C for carbon, O for oxygen, N for nitrogen, Ca for calcium and Na for Sodium. Substances that have two or more atoms bonded together, and therefore more than one element e.g. H2O are called compounds. See Examples of Compounds.

Chemical Formula and Equations - Subscripts
A chemical formula or equation shows the symbols of the elements in the compound and the ratio of the elements to one another. If a substance contains more than one atom of a particular element, this quantity is indicated in chemical formulas or equations using a subscript number after the element symbol.