Lab Report
Experiment 10.4: The concentration of hydrogen peroxide
Name๎ ๎Michael Cooper ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ ๎ Lab Partner
Date: 2/19/2026
Purpose:๎to learn more about Daltons pressure laws and Ideal gas law
Hypothesis:๎ฆ The balloon will expand due to pressure
Instructions:
1. Put the balloon the open end of the turkey baster like you did in experiment 7.2.
2. Holding the balloon to the baster, pour a teaspoon of yeast into the baster so it falls into
the balloon if some gets stuck in the baster, cover the top of the baster with your hand,
and continue to hold the balloon where it clings to the water.
3. If there is a lid on the bottle remove it.
4. Put the bottle on the mass scale and turn it on
5. Carefully pour hydrogen peroxide into the bottle and make sure all of it goes in.
6. Record the mass of hydrogen peroxide.
7. Put the balloon on the bottle so the balloonโs opening forms an airtight seal against the
bottleโs opening.
8. Once the balloon is securely fastened to the bottle, lift up the balloon so the yeast falls
into the bottle quickly.
9. At first, the yeast should stay on top of the liquid in the bottle so not a lot should be
happening quickly.
10. Once no new bubbles have formed set the bottle on the counter and have your helper
hold the balloon so its upright and still.
11. You now need to measure the distance around the balloon. Wrap the string around the
fattest part of the balloon.
12. Carefully cut the string so its just long enough to wrap around the balloon.
13. Use the ruler to measure the length of the string
14. Look up the vapor pressure of water for the temperatures you read.
15. Convert the temperature to kelvin
16. Record the atmospheric pressure of the weather report.
17. If the atmospheric pressure is not in atm, convert it to atm.
18. Convert the vapor pressure to atm.
19. As discussed before you did the experiment, you need to record the amount of oxygen
that was used.
20. Find the volume of the balloon
21. Convert the radius of the balloon
