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   ocr: Balance the equation H20+02 - H202 x= number of molecules of H20 y= number of molecules of 02 z= number of molecules of H202 2x - 2z (1) 2x+2y = - 22(2) With I z=1 2x: = 2z and x+2y=22 2x=2-1=2 1+2y=2-1 - x=1 y=t 1H20+202 1H202 2H20+02- 2H202 Left side Right side 4H 4H 20+20=40 40 Balancing a chemical Equation