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Name _____________________________ Date _____________ Equation Balancing Classwork Directions: Use coefficients (small whole numbers) on each line to balance the chemical equations so that the total number of each type of atom is the same on left and right of arrow. Remember that the coefficients are multiplied by each atom and subscript in the formula which the coefficient precedes. For example, 5H2O indicates 10 hydrogens and 5 oxygens. A subscript, like the 2 in H2O, applies only to the atom or parenthetical group of atoms directly before it. Beside each equation, identify reaction type: SR, DR, S, D, C (see reference for descriptions) RxnType 1. 2. 3. ____ Cl2 ____ N2 + + ____ KI ____ O2 5. ____ Zn ____ H2O ______ Ba(NO3)2 + ____HBr 6. ____ MgO 8. ____ Fe2O3 + ____ O2 ____ CO ____ I2 + ____ Na2SO4 ____ NaNO3 + ____ ZnBr2 ____ Mg 7. ____ C5H12 + + ____ N2O ____ NaOH + _____ H2SO4 4. ____ Na2CO3 + ____ KCl + + ____ BaCO3 ____ H2 ____ O2 ____ CO2 ____ Fe + ____ H2O + ____ CO2