Enter Topic
Decomposition
Part one of term paper
Purpose: In this lab we will observe the products of of potassium
perchlorate (KClO4). We will then predict from our results the correct chemical
reaction equation.
Procedure: 1. Weigh out about 4.0g of KClO4 in a test tube. Record the
accurate weight below. Product Weight Before Weight After Mass of Test tube +
KClO4 41.5g 39.8g Mass of ...
Part two of term paper
... tube is cooling test the gas in the collection bottle with glowing
splint. Caution: Do not leave the rubber tubing down in the water trough during
cooling or you will experience back-up. 5. After the test tube has
cooled weigh it on a balance. What is the change in mass?
Observations: Oxygen flowed from the test tube into the bottle of water, forcing
the water out. Burning ember re-ignited when placed into the bottle of O2.
Calculations: 1. The number of moles of KClO4 that we began with is ...
Word count: 253 | Approximate pages: 1
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