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A glass jar is placed over and lowered onto the flame of a burning candle. Evidence of incomplete combustion is shown by


1 water droplets forming on the inside of a glass jar

2soot forming on the inside of the glass jar

3wax dripping down the side of the candle

4 the flame going out


Sagot :

Answer:

4 the flame goes out because a flame needs oxygen and when it uses up all the oxygen in the jar it goes out