EXPERIMENT #4: STATE OF MATTER SLEUTH Calculations To find the molecular weight of the unknown salt: The unknown salt that was assigned is unknown salt in vial #2‚ which was weighed to 0.12 g mass. Initial Volume of NaOH | Final Volume of NaOH | Volume of NaOH needed | 46.6 mL | 34.8 mL | 46.6-34.8=11.8 mL 46.6-34.8=0.0118 L | 1) Number of moles of NaOH used=0.0118 L of NaOH0.1 M of NaOH 1) Number of moles of NaOH used=0.00118 mol 2) The number of moles of NaOH used is equal
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done this. I am trying to prove that when you add a certain amount of salt to water‚ it will make it more dense. I took pictures of the results. This information can be useful because we can test the density of salt water versus the density of normal tap water.. Hypothesis: Eggs sink in water. I think that
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Fundamental Science Salt water egg experiment Result Some objects float on top of the ocean‚ and other objects sink to the bottom. Why? In this salt water egg experiment we can find a solution for this question. It was noted that to make the egg float salt is needed to dissolve into fresh water. When the egg was lowered into the fresh water container it started to sink. But when salt was added to the container the egg started to float. Adding salt to the water squishes more
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just continuations of the age-old human tradition of salting meat to preserve it and make it safe for eating. Curing helps to prevent foodborne illness caused by bacteria like Clostridium botulinum. It is also important to recognize that the curing salts used to cure meat can be deadly if they are not handled carefully. Cure meats safely by following these steps: Decide which meat you want to cure. Ham is the most popular choice‚ but you can cure any meat. To make things easier‚ choose meat cuts
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SALTS AND THEIR PREPARATION SALTS A salt is a compound formed when the hydrogen ions in an acid are replaced by metal ions or by ammonium ions. Compounds in which the H+ ions in an acid have been replaced by ammonium ions (NH4+) are called ammonium salts. NOTE: •An anion is a negatively charged ion. Hence:•Hydrochloric acid gives chlorides. E.g. sodium chloride‚ ammonium chloride. •Nitric acid gives nitrates. E.g. barium nitrate‚ copper nitrate. •Sulphuric acid gives sulphates. E.g. silver sulphate
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Abstract If we live in a place that gets cold in the winter‚ we have probably seen trucks out spreading a mixture of sand and salt on the streets after a snowfall to help deice the road. Do we sometimes dump ice cubes into a drink to help keep cool on a hot summer day? Have we ever watched the ice cubes melt and wondered how we could make them melt more slowly—or even faster? In this science activity we will get to try some different‚ common household substances to try and answer this question:
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and salt water will be added to the beaker to be separated. The sand will then be separated through the means of filtration. Then the salt will be separated from the water through evaporation. Theory: If the heterogeneous mixture is separated through filtration then the salt water and sand should be separated completely.A heterogeneous mixture is a mixture that is not evenly distributed throughout. If the homogenous mixture is separated through evaporation‚ then their should just be salt left
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remained in the sand/salt mixture. This may raise or lower the recovered mass depending on how thorough the group was is separating out the iron. Or it may balance out leaving a almost 100% recovery percent. This may also raise the salt or sand recovery percent due to the leftover iron. Because the salt was dissolved into water anything that was moistened by the water would leave a salt residue when dried. This was noticed on the sand as white dust. This will lower the salt recovery but raise the
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Title Page A COMPARISON FOR THE BETTER FISH PRESERVATIVE BETWEEN SUGAR AND SALT IN PARTIAL FULFILLMENT OF THE REQUIREMENTS IN CHEMISTRY III FOR SCHOOL YEAR 2011 – 2012 Grace Christian Rubillos Rosemarie Dianne P. Japlos Izzadyl Louise Blateria Vincent Anthony Elizaga James Emmanuel Lumapas RESEARCHERS Rosaminee B. Sanchez ADVISER Acknowledgement The researchers would like to express their gratitude to Mrs. Marcelina Rubillos‚ Grace’s great-grandmother‚ who has contributed valuable information
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electrons. For example‚ “the atoms in sugar do not form ions; instead‚ they are held together because of shared electrons.” 3. Do you think sugar or salt will melt at a higher temperature? Explain your answer. Since sugar is composed of covalent bonds and salt composed of ionic bonds‚ I think salt will take a higher temperature to melt because salt is bonded together by stronger bonds. Ionic bonds are much stronger than covalent bonds. Covalent bonds are not as strong as ionic bonds so it will
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