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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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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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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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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with me‚ and answer a few questions about a bag of M&Ms. I showed her the bag of M&Ms‚ then I revealed to her that there were rocks – not M&Ms – in the bag. I asked her “What’s in the bag?” and she told me that there were rocks in the bag. Then‚ I asked her “Does the bag look like it has rocks in it‚ or does it look like it has candies in it?” She told me confidently that “it looks like it has rocks in it.” I asked her “What’s really inside the bag‚ are there rocks inside it‚ or are there really
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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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specialized manufacturer of tea bag machines for the world’s bestknown brands of tea and herbs and fruit teas‚ such as Lipton‚ Pickwick‚ Twinings and Lyons/Tetley. Teepack is a sister company of Teekanne‚ the leading tea‚ herb‚ and fruit tea packing company in Germany‚ with the Teefix‚ Pompadour and Teekanne brands. (The Teekanne Group has production and sales subsidiaries in several countries. There are about 1‚300 employees in the Group). The invention of the automatic tea bag-packaging machine by Teepack
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Title a. Modeling Diffusion and Osmosis II. Introduction a. If one places a 1.0 M solution of glucose inside a bag and then places that bag into a beaker containing a 1.0 M solution of sucrose‚ the percent of mass lost in the bag is 10.5%. The solution in the bag is hypertonic while the solution in the beaker is hypertonic‚ which is why water moves from the bag to the beaker and the bag loses mass. b. The purpose of this experiment is to see whether or not temperature plays a role in the percent
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