Two separate syntheses of magnesium oxide produced the following pure samples
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Problem
Two separate syntheses of magnesium oxide produced the following pure samples.
• Sample 1: 1.50 g Mg combined with 1.00 g O
• Sample 2: 3.00 g Mg combined with 2.02 g O
Based on these data, which conclusion is most strongly supported?
(a) The two samples obey the Law of Definite Proportions because their oxygen-to-magnesium mass ratios differ by less than 1 %.
(b) The samples must be different compounds since their oxygen-to-magnesium mass ratios are not exactly the same.
(c) The difference in the data illustrates the Law of Multiple Proportions, as Sample 2 contains twice as much oxygen per gram of magnesium as Sample 1.
(d) No valid comparison can be made until atomic (molar) masses are applied to convert the data to an atom-to-atom ratio.