Assignments a (1) R. Kelly - Ignition (Remio bd bluedoorlabs a https:// w blu do

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Assignments a (1) R. Kelly - Ignition (Remio bd bluedoorlabs a https:// w blu doorlabs con ib/take/59e50911celc0/59e509 1874f48 1. If some of the product was spilled prior to the final weighing, what effect (f any) would this have on the percent composition af magnesium in magnesium oxide? O Too low O Unaffected O Too high 2. If the magnesium was not completely reacted with oxygen, what effect (f any) would this have on the percent composition of oxygen in magnesium oxide? O Unaffected O Too low O Too high 3. If you put more water than is needed for reaction 3, and then did not dry out this excess water, what effect (if any) would this have on the calculated ratio of oxygen? O Too high O Too low O Unaffected

Explanation / Answer

1. Would be unaffected.

Because the percentage composition of mg in mgo is fixed. Spilling of product just reduces product weight.

2. No effect.

Because only mg react with o to give mgo and the percent composition is fixed.

3. Too high

Because now the mass of oxygen in h2o would also come into calculation. And also weight of product increases.

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