A student received the following data and did the following calculations: Mass of crucible: Mass of crucible +sample before heating: Mass of crucible + sample after heating 24.0009 g 26.0556 g 25.8013 g Mass of CO2 and H2O lost: Mass of malachite in sample: Mass % malachite: 26.0556 g-25.8013 g 26.0556 g -24.0009 g = 0.2543 g = 2.0547 g = 12.37% 0.2543 g/ 2.0547 g x 100 % What did they do wrong?