FormulaCopperLab

FormulaCopperLab - Finding the formula of an oxide of...

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Finding the formula of an oxide of copper From Royal Society of Chemistry Student Sheets—Classic Chemistry Experiments Introduction The chemical formula gives the types of atom in the substance. It also gives the relative number of each type. From the mass of each element in a sample, the number of moles can be calculated. The lowest whole number ratio provides the simplest chemical formula. What to record Weight of test-tube + bung. Weight of test-tube + bung + copper(II) oxide. Weight of test-tube + bung + copper. What to do 1. Weigh the test-tube + bung. 2. Place two spatulas of dry black copper(II) oxide in the centre of the tube. Try to spread it out. 3. Weigh the tube + bung + copper(II) oxide. 4. Assemble the apparatus as shown in the diagram. 5. Pass a gentle stream of gas through the tube without lighting it. This will flush out the air. After a few seconds set light to the gas and adjust the height of the flame coming out of the test tube to about 3 cm. Keep your head well back.
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FormulaCopperLab - Finding the formula of an oxide of...

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