Students investigated the reaction between a strip of zinc and excess hydrochloric acid. They monitored the volume of hydrogen produced every 15 seconds.
The conical flask was placed in a water bath at 20°C.
The students plotted a graph of their mean results.
The students tested the gas produced during the reaction
Describe the test for hydrogen gas.

84

Explanation:

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

where are the choice options?