The response provides a labeled diagram of the experimental setup used to determine the percentage of the active part of air and explains how to increase the hotness of a Bunsen burner flame in a lab setting.
A water trough containing aqueous sodium hydroxide is placed on one side with a burning candle. On the other side, a watch glass is placed to capture a gas. A graduated gas jar is inverted in the water trough to collect the gas being released. The candle is burned, and the volume of gas collected is used to determine the percentage of the active part of air.
The hotness of a Bunsen burner flame can be increased by adjusting the gas flow rate and the air supply ratio. By increasing the gas flow rate and adjusting the air supply to have a higher oxygen concentration, the Bunsen burner flame can become hotter and more efficient for heating substances in a lab setting.
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