These guys, Those guys

In this experiment, I used 2 beakers (one big and one small), to demonstrate the Law of Conservation. The Law of Conservation states that matter cannot be created or destroyed. To start the experiment, I weighed the big beaker and the small beaker. They were 82.23g and 29.18g. I then filled the big beaker with two “finger” fulls of liquid, and the small beaker with 0.75-1.25g of powder. They now weighed 148.10g and 30.17g. Next, I poured the powder into the liquid beaker. They bubbled and created a white foam. The measurement of the beaker with the powder and the liquid was 148.66g. The mass of the liquid + the powder should have been the same after I combined them, but it wasn’t because some of the gas escaped. When I graphed my experiment, the point fell below the slope. This means that not enough gas was produced in my experiment. This could have been caused by some of the powder not reacting with the liquid. I was able to find of the grams of gas by taking the original mass of everything before and subtracting it by the mass of everything after. Since the gas was lost in the experiment, the gas is equal to the mass lost. If my point had been above the line it would have meant that there was too much gas produced. But how can there be too much gas produced? The ingredients in the experiment can only produce so much gas. We see it as having too much gas, but we are actually measuring how much mass in the entire experiment escaped ( like if any fizzed over the beaker). In the experiment 44/84g of gas should have escaped. I could have figured this out by doing the mathematic calculations. So, the amount of gas divided by the amount of solid (CO2 divided by amount NaCo3). I also could have figured it out by plotting it on a graph. I would compare how closely my point was to the correct slope of 44/84 and the class average slope of y=.425x + .083. To find out how much gas would be left with 5g of solid, you just plug 5 in for x in the equation 44/84x, or plug 5 in for x in 4256(x) + .0834, which equals 2.21g. You could also figure this out by looking at your graphs x-axis, and going up from 5 until you intersect your slope. Then just look across to your y-axis to see how much gas was used. To find how much grams of solid if 5g of gas is produced, you just do the opposite. So plug 5 into the equation  x / .4256 + .0834 which equals 11.83g. To find this on the graph you just go up to 5 on the y-axis and go over across the x-axis until you intersect your slope. IMG_1647[1]

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