AMMONIUM NITRATE :: essays research papers

wisdom REPORT ammonium ion actionNH4NO3ProblemOur task was to investigate what the optimum ratio of solute to solvent that forget produce the maximum cooling/ warming effect?HypothesisWith a smaller criterion of pee (50mls) and the said(prenominal) add together of ammonium treat added. After any period of cartridge holder the change will be a cooler temperature than that of a mixture with a larger quantity of pee.VariablesXWaterXTeaspoonsXTimeXammonium treatXThermometerX intake ( utilise thermometer)Changed/Uncontrolled Variables-The total of verses the mixture was pertainred. We ruttish the mixture until the ammonium ion treat was dissolved, so the amount of propagation we bickeringred after from each(prenominal) ace teaspoonfulfulful was different. -Each teaspoon may not have been equal. Measurements were do based on notion and not exact measurements.Controlled Variables-Amount of water use in each test was equal (100mls and 50mls).-Total amount of a mmonium Nitrate used (150grams).-Temperature was measured after and exact time i.e. 1 minute, 2 proceedings, 3 minutes.EquipmentTrial testX1 thermometerX1 pliant teaspoonX sanctuary glazeX100ml beakerX30mls of waterX1 teaspoon of ammonium NitrateX1 graduate piston chamberX1 inhalation rod starting time TestX1 thermometerX1 plastic teaspoonX1 tarry hearX1 inhalation rodXSafety specs X3 (one for each group member)X250ml beakerX1 graduated cylinderX150 grams of Ammonium NitrateX100mls of water flash TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stir rodXSafety glasses X3 (one for each group member)X100ml beakerX1 graduated cylinderXleftover from passe-partout 150 grams of Ammonium NitrateX50mls of waterNOTE The stirring rod was not used in the First and jiffy experiments, as it was not available. A stand in we used the thermometer.MethodsTrial TestIn a 100ml beaker 30mls of water was set(p) the temperature of the water was pointed. 1 teaspoon of Ammonium Nitrate wa s added to the water and stirred until dissolved. The temperature was then recorded again. This was to see the divagation between the initial temperature and the last-place temperature.First TestIn a 250ml beaker place 100mls of water, measure the temperature of the water and record this initial temperature onto a table. heap the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved. After 1 minute measure the temperature and record it, do this for a further 2 minutes (3 minutes in total). Repeat this process for a total of 10 teaspoons.Second TestIn a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. tidy sum the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.AMMONIUM NITRATE essays research papers SCIENCE REPORTAMMONIUM NITRATENH4NO3ProblemOur task was to i nvestigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect?HypothesisWith a smaller quantity of water (50mls) and the same amount of Ammonium Nitrate added. After any period of time the mixture will be a cooler temperature than that of a mixture with a larger quantity of water.VariablesXWaterXTeaspoonsXTimeXAmmonium NitrateXThermometerXStirring (used thermometer)Changed/Uncontrolled Variables-The amount of times the mixture was stirred. We stirred the mixture until the Ammonium Nitrate was dissolved, so the amount of times we stirred after each teaspoon was different. -Each teaspoon may not have been equal. Measurements were made based on judgment and not exact measurements.Controlled Variables-Amount of water used in each test was equal (100mls and 50mls).-Total amount of Ammonium Nitrate used (150grams).-Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.EquipmentTrial testX1 thermometerX1 plastic teas poonXSafety glassesX100ml beakerX30mls of waterX1 teaspoon of Ammonium NitrateX1 graduated cylinderX1 stirring rodFirst TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stirring rodXSafety glasses X3 (one for each group member)X250ml beakerX1 graduated cylinderX150 grams of Ammonium NitrateX100mls of waterSecond TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stirring rodXSafety glasses X3 (one for each group member)X100ml beakerX1 graduated cylinderXleftover from original 150 grams of Ammonium NitrateX50mls of waterNOTE The stirring rod was not used in the First and Second experiments, as it was not available. A substitute we used the thermometer.MethodsTrial TestIn a 100ml beaker 30mls of water was placed the temperature of the water was recorded. 1 teaspoon of Ammonium Nitrate was added to the water and stirred until dissolved. The temperature was then recorded again. This was to see the difference between the initial temperature and the final temperature.First TestIn a 250ml beaker place 100mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved. After 1 minute measure the temperature and record it, do this for a further 2 minutes (3 minutes in total). Repeat this process for a total of 10 teaspoons.Second TestIn a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.