10th+burn+Magnesium

The 10th grade combusted pieces of magnesium in crucibles. The data and results of this investigation are in the tables below.

Table 1: Masses of Objects before and after combustion (g) || Mass of Empty Crucible and Cover (g) || Mass of Crucible, Lid, and Combustion Product (g) ||
 * Group || Mass of Magnesium
 * Joanna and Shaun || 0.175 || 41.511 || 41.792 ||
 * -J&S #2 || 0.350 || 39.103 || 39.689 ||
 * Serena and Maurice || 0.178 || 39.994 || 40.221 ||
 * Soo-Ah and Stephen || 0.304 || 42.812 || 43.291 ||
 * Andy and Maaike || 0.224 || 41.294 || 41.669 ||
 * -A&M #2 || 0.303 || 41.218 || 41.709 ||
 * Henri and David || 0.225 || 39.190 || 39.472 ||
 * -H&D #2 || 0.335 || 41.601 || 42.154 ||

 Table 2: Amounts of Oxygen and Magnesium used during combustion of Mg
 * Group || Mass of Oxygen (g) || Moles of Mg (mol) || Moles of O (mol) || Oxygen to Magnesium Mole Ratio ||
 * Joanna and Shaun || 0.106 || 0.0072 || 0.0067 || 0.93 : 1.0 ||
 * Soo-Ah and Stephen || 0.175 || 0.0125 || 0.0109 || 0.87 : 1.0 ||
 * Andy and Maaike || 0.151 || 0.00922 || 0.00944 || 1.02 : 1.00 ||
 * Serena and Maurice || 0.048 || 0.00732 || 0.00300 || 0.410 : 1.00 ||
 * Henry and David || 0.057 || 0.009256 || 0.00356 || 0.986 : 1.00 ||