Citric acid reacts rapidly with iron‚ but is not itself the rusting of iron. The water in the lemon juice helps iron rust‚ but in the presence of air. The same happens when you open bottle of Coca-Cola‚ including citric acid‚ phosphoric acid‚ carbonic acid and other things in the fall for the taste. Citric acid has an advantage over some other acids‚ because it is less corrosive‚ not as dangerous to the environment‚ while remaining efficient‚ cheap (but not as cheap as the old battery acid).
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put in salt water? Purpose: I want to know why the egg floats in fresh water and not salt water. I want to know if the egg will float in salt water‚ Also this shows why materials float easier in saltwater and sink in freshwater. Research: Since the egg’s density is higher than the density of freshwater the egg will sink. Density is mass per unit volume‚ which means a measure of how much mater is in a certain volume. If you add enough salt the egg will float again. The salt makes the water denser
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Part A: Title: Diffusion Diffusion is the spontaneous movement of particles from where they are more concentrated to where they are less concentrated. For this experiment‚ a 14 cm glass was filled with cold tap water. A drop of red food coloring was dropped in the cup. A stopwatch was used to measure the time it took for the food coloring to get to the bottom of the cup. The average diffusion rate was .78 cm a second. If a different color was used‚ I do not think it would have made a difference
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sauce for five minutes. Now it is time to add spices and salt. This will flavor the sauce and make it taste good. Then cook the sauce for another minute. Then you can add the water and bring it to a boil. After the water boils‚ you need to burn down the fire so that the chicken and sauce can simmer. Let it simmer for 20 to 30 minutes. Then it is time to add two cups of rice. Let the rice and sauce simmer. Cook this until all the water is absorbed by the rice. This will take about 15 minutes
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Title: The effect of temperature on beet cell membranes. Introduction: 1. Eukaryotic cells are much more intricate than prokaryotic cells. The first thing observed is the assortment of structures in the cytoplasm. The fluid filled region between the nucleus and the plasma membrane. These structures along with the nucleus are the organelles‚ each having a specific function in the cell. The organelles are by membranes divided in proficient sections .The plant cell is made up of a rigid thick wall
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There are fresh water fish in the fish hobbyist community known as algae eaters. I have narrowed my research to two algae eaters‚ the Chinese algae eater and the Plecotomus Fish from South America. The algae eater Fish needs to be affordable‚ an addition to my Fish tank‚ and Get along with all six Angelfish. Live in water temperatures of 78-82 degrees Fahrenheit‚ and not make a mess in the tank or destroy the vegetation already living in the aquarium. I have set up a point by point arrangement to
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Water pollution is a serious matter‚ and can be defined as a problem. Poor water quality is just another way of saying water pollution. Water pollution is when one or more substances build up in water to such an extent‚ that several problems for animals and humans develop. Rivers‚ lakes‚ oceans‚ and other inland waters are able to naturally clean up certain amounts of the pollution by dispersing them harmlessly. Water pollution depends on the quantities: how much of the polluting substance is released
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n this study‚ the Stroop effect experiment will be carried out on matching and mismatching test. The Stroop effect experiment was named after Ridely Stroop‚ published in 1935‚ and the purpose of this experiment was to demonstrate the difference in reaction time of reading the name of the coloured words and naming the ink of the colour. Not only does it record the reaction time‚ but it also aims to measure individuals focused attention‚ learning and memory (Stroop‚ 1935). However‚ when reading through
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Experiment 15 The Purification of Water Date Performed: 9/25/2012 Joe Shmoe Date Submitted: 9/26/2012 Chemistry 1046L-sec07 Lab TA: Blankity Blank Purpose: The purpose of this experiment is to learn about the various processes by which water is processed and treated. This experiment will involve removing chemical impurities in water through using techniques such as absorption spectrophotometry‚ sample collection‚ serial dilution‚ filtration PH and graphical analysis. If this
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Water has polarity. Polarity is the uneven distribution of charge. Water has cohesion‚ adhesion‚ and heat capacity. Cohesion is the attraction between molecules of the same substances. Adhesion is the force of attraction between molecules of a different substances. Heat capacity is the amount of heat it takes to raise temperature of a substance. The experiment displayed shows water can have adhesion and cohesion. The hypothesis of this experiment is if a nonpolar substance is added to water
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