AMMONIUM NITRATE :: essays research papers

SCIENCE REPORTAMMONIUM NITRATENH4NO3ProblemOur task was to investigate what the optimum ratio of solute to resultant that provide p magnetic poleuce the maximum cooling/heating effect?HypothesisWith a smaller quantity of urine (50mls) and the same meter of ammonium process added. later any period of time the multifariousness will be a cooler temperature than that of a mixture with a larger quantity of pissing.VariablesX waterXTeaspoonsXTimeXAmmonium treatXThermometerXStirring (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 teaspoonful was different. -Each teaspoon may not beget been equal. Measurements were make based on judgment and not exact appraisements.Controlled Variables-Amount of water used in each test was equal (100mls and 50mls).-Total amount of Ammonium Nitrate used (150grams).-Temperature was measured af ter and exact time i.e. 1 minute, 2 minutes, 3 minutes.EquipmentTrial testX1 thermometerX1 fictile teaspoonXSafety glassesX100ml beakerX30mls of waterX1 teaspoon of Ammonium NitrateX1 graduated cylinderX1 aspiration rodFirst TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stirring rodXSafety glasses X3 ( whizz for each conference 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 reco rded again. This was to see the difference between the sign temperature and the final examination 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 supercharge 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.AMMONIUM NITRATE essays research papers SCIENCE REPORTAMMONIUM NITRATENH4NO3ProblemOur task was to investigate what the optimum ratio of solute to solvent that will produce the m aximum 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 teaspoonXSafety glassesX100ml beakerX30mls of waterX1 teaspoon of Ammonium Nitrate X1 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 r ecord 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.