C. the CO3 in limestone (CaCO3) will nuetralize the acid
The sandstone is older.in order for the granite to have been formed with sandstone in its precnese then it had to have already exsisted in that area..making it older.
The formula of pentaphosphorus tetraoxide is P₅O₄
As per the convention of naming chemical compounds - the Prefix names are used for naming covalent compounds.
The prefix 'penta' means '5', so we use 5 as subscript for P.
The prefix 'tetra' means '4', so we use 4 as subscript for O.
Therefore the formula of pentaphosphorus tetraoxide is P₅O₄