hydrated salt in order to determine the percentage of water inside of this hydrated salt. We heated up the salt in order to boil off the water‚ which allowed us to find the weight of the CuSO4 by itself. By comparing this final weight with the original weight and subtracting the difference‚ we were able to compile data about how much the weight of the hydrated salt decreased as the water gradually boiled away. In doing so‚ we were able to find the total weight of the water in the hydrated salt by subtracting
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A Summary of “Once More to the Lake” Jason Mraz Eng 101 Essay#1- Revision In his essay "Once More to the Lake"‚ E.B. White shares the story of reliving his childhood memories of going to a lake in Maine. As an adult‚ E.B. White lives by the ocean and has a love for the salt water‚ but every so often he get the urge to revisit the lake he knew as a child. One day that desire was strong enough to motivate him to take his son to the same place his father had taken
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Heat of vaporisation. f. . Melting point g. Boiling point 4. Why do gases diffuse rapidly? 5. Write the relationship between Celsius scale and Kelvin scale of temperature. 6. Why does the level of water not change when salt is dissolved in water? 7. How can matter change its state? 8. Define boiling. Why boiling is considered as bulk phenomenon? 9. Why does the temperature of a substance remain constant during melting and boiling even when heat is being supplied
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example the presence of salt greatly enhances the rusting of metals. This is due to the fact that the dissolved salt increases the conductivity of the aqueous solution formed at the surface of the metal and enhances the rate of electrochemical corrosion. This is one reason why iron or steel tend to corrode much more quickly when exposed to salt (such as that used to melt snow or ice on roads) or moist salty air near the ocean. [pic] salt will speed up rusting. The more salt you
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Love Across the Salt Desert K N Daruwla The story "Love Across the Salt Desert" is set in the village of Khavda‚ located in the Desert of Kutch‚ Gujarat‚ India. The author has used this backdrop to effectively symbolize the thirst that the two protagonists feel for one another--so the scorching sun of the desert becomes a metaphor for their parched lives which were looking for satiation. He also extends the drought prevailing in the land to be an expression of the same deprivation and with the
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Experiment 5 – Percent Water in a Hydrated Salt Pre-Lab Hints 1. Note definition of deliquescent in the introduction. 2. See side notes for part A‚ as well as part 1 of Technique 15C (pg 27). 3. Mass of water in sample is the mass lost by heating (initial minus final). Water % is 100 times the g of water divided by the initial g of hydrate sample. 4. a. See step A1 in the procedure. b. A hot sample on the balance creates air currents and causes thermal expansion‚ both of which decrease
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After the horror of the drowning that happened at the Otjikoto Lake‚ Painter decided to remain in the base camp. He does not apply for any further leave owed to him. His work shifts are based on a twelve hour work-shift and then a twenty-four hour recovery period. It works out that he labours through the night and then has a day and a night off. The cycle of shifts changing daily‚ Painter would then have a night and a day off and labour through the day. This arrangement suited him well. On the days
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so for water with salt inside. The higher amount of salt there is in the water‚ the more the freezing point decreases. So‚ salt water freezes later than freshwater. The exact measurement of how they impact each other is this: every 5 psu increase‚ the freezing point decreases by 28%.. In an ocean‚ there is frazil and brine. Frazil are ice crystals suspended in water‚ and they are made of nearly pure freshwater. Frazil is the first stages of the growth of sea ice. Brine are salt droplets. Sometime
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Carter Administration The first critical piece of foreign policy done by the Carter administration was the passing of the SALT II treaty later in the administration. It was the first treaty that successfully passed after these talks‚ and it stated‚ “Declaring their intention to undertake in the near future negotiations further to limit and further to reduce strategic offensive arms.” (The Government of the United States) The treaty was explicit in demanding the reduction of all aspects of the Soviet
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Gravimetric Analysis of a Chloride Salt CHEM 1001 Purpose: To illustrate typical techniques used in gravimetric analysis by determining quantitatively the chloride content in an unknown soluble salt. Theory: AgCl(s) is a very insoluble solid‚ yet still does have some solubility. Because of these traits‚ the following reaction is able to occur: Ag+(aq) + Cl−(aq) → AgCl(s) . This reaction is able to occur in both directions. When a soluble silver salt such as AgNO3 is added to a solution containing
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