AtomicMassLab

AtomicMassLab - The determination of relative atomic mass...

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The determination of relative atomic mass From Royal Society of Chemistry Student Sheets—Classic Chemistry Experiments Introduction One mole of any gas occupies the same volume when measured under the same conditions of temperature and pressure. In this experiment, the number of moles of hydrogen produced from a known mass of magnesium is measured. The relative atomic mass of magnesium can therefore be calculated. What to record The mass of magnesium used and the volume of hydrogen produced. What to do 1. Clean a piece of magnesium ribbon (about 3.5 cm long) and weigh it accurately (This should weigh between 0.02 g and 0.04 g; if not adjust the amount used.) 2. Measure 25 cm 3 of dilute hydrochloric acid into the burette. Carefully add 25 cm 3 of water on top of this. 3. Push the magnesium in the end of the burette so it stays in position with its own tension. 4. Add 50 cm 3 of water to a 250 cm 3 beaker. 5.
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This note was uploaded on 11/09/2011 for the course CHEM 100 taught by Professor Sdfsdf during the Winter '08 term at BYU.

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AtomicMassLab - The determination of relative atomic mass...

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