Based on the following data caculate: Mass of test tube + MNO2 + unknown 45.549g Mass of test tube + MNO2                  42.008g Mass unknown                                    3.541g   Mass of test tube + MNO2 + residue..after first heating  44.591g Second heating 44.580g   Mass of Oxygen evolved? Mass of KCLO3   ? Mass of KCL? % of KCLO3 in unknown ? % of KCL in unknown?

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by jadelyilah at March 20, 2012