1.Consider an experiment in which a candle is placed in a dish of water. The can

Question

1.Consider an experiment in which a candle is placed in a dish of water. The candle is lit and, then covered with a jar. After a short time, the candle flame goes out.

a) Why does the flame go out?

b) What are the two normal products of complete combustion?

c) While candles burn, are gases being consumed, produced, or both? Explain.

d) Could this experiment determine the percent oxygen in air? Why or why not?

2. If the water level rises 1.5 cm in a 15.0 cm test tube, What is the % volume change in the gas in the test tube?

Explanation / Answer

1 a) When all the oxygen is consumed, the flame goes out.

b) Carbon dioxide and water vapor

c) Both. Oxygen is consumed while Carbon dioxide and water vapor are produced.

d) Yes. by the rise in water level in the jar.

2) volume change = (1.5/ 15.0) x 100 = 10 %

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.