Problem Question: * What effect does temperature have on the rate of Diffusion? Hypothesis: If we put the antacid in hot water‚ then it will dissolve faster than in cold water or room temperature water. Material List: * One thermometer * 3 beakers (of the same size) * 3 antacid tablets * Cup of ice * Hot plate * Paper towels * Water Procedures: Step 1: Gather materials Step 2: Label the beaker #1‚ #2‚ and #3 Step 3: Fill each beaker with the same amount of
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1 Diffusion is the movement of molecules (or ions) from a high concentration to low concentration. Diffusion is form of passive transport as energy does not need to be generated. Diffusion is complete when the concentration of molecules is equal on either side of the membrane. Diffusion rate can be influenced by many factors such as: Concentration gradient across the the membrane. Permeability of the membrane to the diffusing substance. Temperature. Surface area of the membrane. Question 2 2.1
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Diffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport‚ without requiring bulk motion. Thus‚ diffusion should not be confused with convection‚ or advections‚ which are other transport mechanisms that utilize bulk motion to move particles from one place to another. In Latin‚ "diffundere" means "to spread out". There are two ways to introduce the notion of diffusion: either a phenomenological approach
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How to solve a Rubik’s cube The purpose of this report is to inform the audience on how to solve a Rubik’s cube in three simple steps. Solving a Rubik’s cube can be difficult; however by solving one layer at a time‚ and knowing the correct algorithm to use for each desired move‚ makes solving a Rubik’s cube easier than it looks. Introduction Invented by mechanics in 1974. There are over 43 quintillion possible combinations for solving a Rubik’s cube. That is 43‚252‚003‚274‚489‚856‚000. (information-facts)
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Islam occurred in the trans- Saharan area in Africa. The spread of Islam impacted many of these societies‚ affecting the rule of kings‚ changing the daily lives of many people‚ and changing the religions. However‚ these changes did not transpire by themselves. The spread of Islam was possible because of the trade and merchants in the Sahara‚ the many kings and their servicemen‚ and the journey to Mecca made by Mansa Musa. Merchants and trade in the trans-Saharan areas helped diffuse Islam. In Document
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Volume (CM3) Diameter (CM) Radius (CM) M&M’S® Thickness (CM) 1 75 108 54 0.743 2 83 120 60 0.658 Table 2 – Direct Measurement Trial M&M’S® Thickness (CM) 1 0.642 2 0.741 3 0.683 Table 3 – Calculated Averages Method Calculated Average Thickness (CM) Indirect (from Table 1) 0.701 Direct (from Table 2) 0.689 Questions: 1. When you performed Step 2 of the procedure‚ you actually made a cylinder of M&M’S®. The cylinder was rather "smushed‚" and the
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Aluminum 2.70 Gold 19.3 1. An object has a mass of 57.7 g and occupies a volume of 21.65 cm3‚ what is its density? 2. An object whose density is 1.98 x 103 kg/m3 has a mass of 35.4 g. How many cubic centimeters does the object occupy? 3. A cylinder has a radius of 12.0 cm. It has a density of 15.2 g/cm3 and a mass of 100 g. What is the height of the cylinder? (Hint: volume of a cylinder can be calculated by r2h) 4. A friend shows you a gift
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My 48 hour ice cube addiction simulation turned out to be very different than what i had expected. I don’t put an ice cubes in my water cup at all. So my ice maker in the freezer is always empty. So I have to keep the ice maker full of ice cubes to use it in my addiction simulation. My first hour in the 48 hours simulation I was trying to fill my water bottle with ice cubes. I spilled some of ice cubes on the floor. My dad got suspicious when I filled a water bottle full of ice cubes‚ because I’m not
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In the experiment‚ as the size of the cube decreased‚ the absorption rate increased‚ showing that the smaller cells absorbed more sodium hydroxide than bigger cells. The smaller cells were able to absorb more sodium hydroxide as they have a bigger surface area to volume ratio causing them to act more efficiently than the bigger cells. The smallest cell had a ratio of 1:12 while the biggest cell had a ratio of 1:2‚ leaving a gap of 5:12 causing the bigger cell to act less efficient in absorbing the
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| |Preview/outline of the main |I will explain three basic things which include how to go about finding the right materials‚ how to melt| |parts |the wax‚ and how to make a molded ice-cube candle. | |Linking ideas-sequencing |Let’s start by doing the most important thing‚ which is to find all of the materials‚ and tools needed | | |to
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