E.g. in H3PO4 (O, -2).
8. The sum of the oxidation states of all the atoms in a species must be equal to net charge on the species. e.g. Net Charge of HClO4 = 0, i.e. [+1(H)+7(Cl)-2<span>*4(O)] = 0.</span>
12 moles are in the 175L of SO2 gas at STP
The answer is B. The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
Evaporation is the change from a liquid to gas
Depending if the reaction is a reversible or an irreversible one, the direction of the arrow will point in one direction or 2 directions from reactants to products.