1. The problem statement, all variables and given/known data Balance the following equations. (Use the lowest possible coefficients and enter a "1" if the coefficent is a one.) (a) ___Cr(s) + ___S8(s) -> ___Cr2S3(s) (b) ___NaHCO3(s) -> ___Na2CO3(s) + ___CO2(g) + ___H2O(g) (c) ___KClO3(s) -> ___ KCl(s) + ___O2(g) (d) ___Eu(s) + ___HF(g)-> ___EuF3(s) + ___H2(g) 2. Relevant equations 3. The attempt at a solution i just do not know how to do this. could anyone simply explain how to do? once i understand the basic formula to solve one problem, i should be able to do the rest.