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There are many topics and subjects that we could have chosen our topic, but we chose to write about Henry's Law. Then we looked at previous projects and decided on our experiment. In this essay we talk about what Henry's Law is, where we got the idea, what we learned, what the results showed, what mistakes we made, things we would change, and after we analyzed our data for error.
Henry's Law is the law we chose to base our experiment around. Henry's Law is the principle of putting so much pressure on gases that the gases dissolve into liquids. When you put more pressure on the gas then it will dissolve more into a liquid, if you put less pressure it dissolves less into the liquid. It also applies in reverse, when if you release pressure then the gas is released from the liquid and more or less is released depending on the pressure. We are testing how pressure affects the amount of gas that is released from a liquid it was dissolved into by pressure. In soda bottles carbon dioxide is pressurized into the soda and when you open it he gas is repressurized and released. We are measuring the amount of gas that comes out of the soda at different depths of a pool because the more pressure you have the lesser the pressure change in the soda so less gas is released. This means that there is more gas released at higher depths and at lower depths less gas is released.
We used a couple of sources to plan and design our experiment. When we looked at Lucy and Channing's project, we thought that it was very good but could be improved even more. We needed to find a way of measuring the bubbles in the soda. So we decided to try and measure it by making a homemade graduated cylinder for the bubbles to funnel into. This idea had not been used before, and we were confident on how to make it and that it would work fairly well.
You would be able to use the results we collected to go down deeper and be safer. For example, you could use this data to determine how much pressure is needed to push a gas into a liquid. We learned from our experiment that only five feet makes a difference in how much gas is dissolved into a bottle of soda. To be able to go to the surface if you have lots of a gas in your blood you would be like a giant soda when you reached the surface. You would have to proceed slowly to the surface and let the gas emerge from your blood in very small amounts so that you would not experience the bends. This is what we predicted from our experiment.
Our results show a few things. First of all, it shows that as the depth and pressure increase in and on the bottle, the amount of gas bubbles released decreased. Also, [next page]