diffusion - where water diffuses through a membrane which has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through‚ but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions‚ water moves through it in both directions at the same time. However‚ more water leaves a dilute
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comes to drinking water‚ most people immediately desire a crystal clear‚ ice cold bottle of water. What they might not know is that bottled water is dangerous; not only is it stored in a carcinogen-releasing container‚ but it has over 38 other chemicals and pollutants in it. Tap water‚ on the other hand‚ is straight from a source that is thoroughly regulated. Consumers should ban the bottle when it comes to drinking water and instead drink tap water. For one‚ drinking tap water decreases the astronomical
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clean tap water is something Americans take for granted. But such is not the case for the residents of Flint‚ Michigan. Their water supply is so tainted that President Obama declared a federal state of emergency in Flint releasing up to $5 million USD to help the city combat what is probably one of the biggest public health crisis of recent times. The chain of events that led to this unprecedented situation began in 2013. In a bid to save money‚ city officials decided to stop purchasing water from
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The Effects Sodium Chloride has on pond water Introduction Ponds are depressions in the ground that fill with water from either run offs or melting snow or rain fall from many different weather changes. There are two types of ponds permanent and temporary. Ponds tend to be much smaller in size and are usually only six to ten feet in depth. This differs from a lake because the size of a lake is much larger and is much deeper. The temperature of a pond is usually the same from top to bottom and
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dangerous diseases that can be found on flowing water. These diseases are very harmful not only to our digestive system but also to all of the parts of our body. These diseases can kill many people that are drinking water on the tap water and mostly on the drinking fountain; people might drink on a drinking fountain which is dirty because of the different people that are drinking and spiting their saliva on to it‚ bacteria can easily contaminate the water that is coming out from the drinking fountain
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Construction of a Standard Curve for the Determination of Protein Concentration 09/13/12 PCB 3023-007 Results Figure1: Standard curve. This graph was constructed from the fixed amounts of Bovine Serum Albumin (BSA). Varying amounts of BSA at a concentration of .5µ/µl were mixed with the water and 1mL of coomassie dye. The equation y=0.0259x +0.0511 represents the best fit line for a data set taken from µg of protein equals two to ten µg. Optical density (OD) was surveyed using a Mach
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I remember the first time I bought a pool cue. I had just started playing pool and was getting used to the warped house cues that would sometimes send the balls scrambling in undetermined directions. That is why I decided to buy my own cue and did this without knowing that there is actually a bit of basic knowledge needed to select the right one. Well‚ I figured that out real quick. First of all‚ I didn’t realize that I would need to spend over $15.00 for a good cue. To get a good cue‚ you need
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Title: Determination of Iron in Natural water by Spectrophotometry. Aim: To determine the iron in natural water by spectrophotometry. Abstract: The iron in natural water was determined by utilizing spectrophotometric analysis. That was done by measuring the absorbance of five Fe(oPH)2+3 standards at 510 nm. From that information‚ a calibration curve was plotted and used to find the amount of Fe2+ that was in two unknown water samples based on the absorbance readings obtained with them at 510nm. The
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Percent Water in a Hydrate PURPOSE To determine the percent water in a hydrate sample. INTRODUCTION Many substances contain water molecules as a part of their crystal structure. We call such solids hydrates‚ and we call the bound water the water of hydration. A hydrate has a definite number of water molecules bound to each anhydrous salt unit. The formula of the hydrate copper(II) sulfate pentahydrate is CuSO4 · 5 H2O The dot indicates that the molecules of water are attached to the ions in CuSO4
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Tap Tap Boring night‚ boring day Tap Tap Regular night‚ regular day Tap Tap But... Tap Tap ...Why? I mentally tapped my fingers on the kitchen counter as I drink some water from the cup in my hand. I had just been through a long day of classes‚ and it was around two o’clock AM and I had gotten thirsty in the middle of the night. I haven’t been able to sleep for some reason for the past few days acually‚ because of a lingering thought in my mind. It has been bugging me and I just can’t sleep if it
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