Results: Bag 1 had a rate of osmosis equal to 0.01 grams per minute. Bag 2 had a rate of osmosis equal to 0.0543 grams per minute. Bag 3 had a rate of osmosis equal to 0.0471 grams per minute. Bag 4 had a rate of osmosis equal to 0.0886 grams per minute. Bag 5 had a rate of osmosis equal to -0.0914 grams per minute (Figure A). Figure A: Shifting of mass in grams for each dialysis bag was measured every 5 minutes for 30 minutes. Bag 1 contained DI H2O and was submerged in DI H2O. Bags 2‚ 3‚ and
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kernels in a bag of popcorn kernels without having to count them individually. We can apply our knowledge of solving problems involving the mole to find the number of popcorn kernels in the bag. Variables: Manipulated: Weight of Kernels. Controlled: Plastic Bag‚ Scale. Responding: The Weight of the kernels in grams‚ the number of kernels in the bag‚ the weight of the plastic bag in grams. Prediction/Hypothesis I think that for us to accurately find the number of kernels in the bag‚ we will
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water across a membrane. The purpose of the study was to calculate the rate of osmosis in artificial cells containing different concentrations of sucrose and water. We studied the rate of osmosis in artificial cells by creating five different dialysis bags with different concentrations of both sucrose and water and calculating the cumulative change in weight ever 10 minutes for 90 minutes. Our results for the artificial cells showed different concentrations moved from high to low concentrations- through
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Then‚ take it out and tie off one end of the tubing to form a bag. Put an extra fold at the end‚ twist‚ and tie it with string. Rub the end of the other end between fingers until it opens. Put 15 mL of the 15% glucose/1% starch solution in the bag. Use the glucose tape and dip it in the solution. Then‚ record the color change on the tape and the bag. Tie the other end of the bag with enough space for expansion. Fill a 250-mL beaker with distilled water. Add 4 mL of Lugol’s
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BOOK IN A BAG BOOK REPORT A “Book in a Bag” is a book report contained in a brown paper or paper gift bag. The purpose of the outside of the bag is to interest a classmate to want to read your book. The inside of your bag should include items that you will be able to use to explain important parts of your book. Pick any book that is a comfortable reading level for you. (You will need to get the approval of your teacher.) Due Date: Monday‚ February 6th MATERIAL SUGGESTIONS: You will
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substance from an area of high concentration to low concentration (Biological 21). With this knowledge we tried to recreate diffusion for students to understand the process. The dialysis bags represented our selectively permeable membrane with the fluid inside it‚ sucrose. How much of the substance moves from the cup to the bag quickly depends on the temperature of the substance. The class used four different temperatures to measure the rate of diffusion. I thought that the rate of diffusion would increase
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In addition to the environment‚ marine animals mistakenly eat plastic bags due to people’s littering‚ which keeps killing ocean wildlife. The clean and blue oceans in California always attract tourists to spend time enjoying it during their holiday. Nonetheless‚ trashes littered by people gather together in the oceans due to ocean current‚ and plastic bags play a key role. As plastic bags dissolve‚ it forms a collection of marine debris‚ which forms Great Pacific Garbage Patch. Generally speaking
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Introduction: The purpose of this experiment is to determine the most efficient air bag that will protect Humpty when he is dropped. When talking about the most efficient air bag we are talking about using the least amount of chemicals to make the most carbon dioxide to inflate the bag. We hypothesized that a small amount of sodium bicarbonate with a small amount of acetic acid will create enough carbon dioxide to inflate the bag so Humpty will have enough cushion to protect him from the fall. Procedures:
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EXERCISE 1D: Calculation of Water Potential from Experimental Data This exercise required a calculator and a pencil. Procedure: EXERCISE 1A: Soak the dialysis tubing in water before you start the experiment. Tie off one end of the tubing to form a bag like structure. Through the open end of the bad‚ place the
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in the bag and distilled water in the beaker had almost exactly the same results. The masses were relatively the same the difference have could been from the amount of liquid that was placed inside of each of the bags. The second experiment with 5% Ovalbumin in the bag and 1 M sucrose in the beaker had almost exactly the same results. The masses were relatively the same the difference could have been from the amount of liquid that was placed inside the bag. The substances that entered the bag for the
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