SCIENCE REPORT AMMONIUM NITRATE NH4NO3 Problem Our task was to investigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect? Hypothesis With 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. Variables X Water X Teaspoons X Time X Ammonium Nitrate X Thermometer X Stirring
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PRODUCTS 1 Urea 2 Di-Ammonium Phosphate (DAP). 3 Calcium Ammonium Nitrate (CAN). 4 Ammonium Sulphates (AS) 5 Single Super Phosphate (SSP) 6 Nitro phosphate (NP) 7 Sulphate of Potash 8 Zinc Sulphate 1. Urea: More than 90% of the world’s production is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use (46.7%). 2. Di-Ammonium Phosphate (DAP): It contains 46% P2O5 and 18% N.
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of Cold Packs An instant cold pack is a device that is made up of two bags; one containing water‚ and an inside bag containing ammonium nitrate. Have you ever wondered how people use hot packs to warm up their hands in the winter or use cold packs on a real terrible injury? How can this package produce heat or cold by only shaking or crushing those packs? Ammonium nitrate is a chemical compound that is a white crystalline solid used as fertilizer and as a part of explosives. When the inner bag is
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* . Introduction Endothermic reactions are accompanied by the absorption of heat. The dissolving of ammonium nitrate in water is an example of an endothermic reaction. The solution resulting from this mixture is colder than either the ammonium nitrate or the water. This is the simple explanation of what happens in an instant ice pack. The more detailed information will be discussed in the following paragraphs. Cold Packs Most cold packs come with a fabric cover made to absorb condensation and
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7 days and 14 days for the production of ammonia using Nessler’s reagent‚ nitrites using Trommsdorf’s reagent‚ and nitrate using diphenylamine reagent. Soil inoculations of ammonium sulphate and nitrite broths were incubated at room temperature for 7 days and 14 days. Incubation Period Broth Type Nessler’s Reagent Trommsdorf’s Reagent Diphenylamine Reagent 7 Days Ammonium Sulfate Broth Colorless- ammonia not present Presence of blue-black color. Nitrite production. N/A*
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Heidi Duncan 11/24/13 Exothermic and Endothermic Reactions Lab The purpose of this lab is to observe how heat is released or absorbed with different chemicals. Data Table 1 – HCI and NaOH Trial 1 Trial 2 Avg Volume 1.0 M HCI(ml) 25 25 - Volume1.0 M NaOH (ml) 25 25 - Ti of HCI before mixing 20 20 - Ti of NaOH before mixing( 20 20 - Average Ti before mixing( 20 20 - Tf of mixture ) 26 26 - T ) 6 6 - Specific Heat (J/g) 4.184 4.184 - Heat‚ q (J) 1255.2
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Report The Effect Ammonium Nitrate has on the Temperature of Water During this lab students are going to mix water and ammonium nitrate one gram at a time and observe the change in temperature that is occurring. The students are then going to record the data on a table and later will be able to make a graph of the results. A hypothesis for this lab could be if ammonium nitrate is added to water then the water temperature will decrease. . Hypothesis: If ammonium nitrate is added to water then
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and the results were recorded. 4. Repeat experiment with the other salt. Note: Calorimetry is the technique used to measure the heat changes during a chemical reaction. Results: (assume density of water is 1ml = 1g) | Sodium Hydroxide | Ammonium Nitrate | Mass of Solute (g) | 2 | 2 | Volume of Water (ml) | 50 | 50 | Initial Temperature (oC) | 25 | 25 | Final Temperature (oC) | 34.4 | 22.2 | NaOH calculation | NH4NO3 calculation | Q = mCΔT = 52 x 4.18 x (34.4 - 25) = 2043
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1. Discuss the underlying reasons for the rapid growth of crime laboratories in the United States since the late 1960s. pg. 11 The reasons why the growths of crime laboratories in the United States are: agencies saw their potential application to criminal investigation or were pressed by increasing casework. Coinciding with changing judicial requirements has been the staggering increase in crime rates in the United States over the past forty years which make the police agencies use of labs greater
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A fairly simple solution can be made to solve three problems at once. The first problem is that too many people are addicted to alcohol and drugs. The second problem is that fertilizer can be used to create bombs that endanger the public. The final problem is that there is no room for illegal immigrants to come in. The main problem to be solved is that 23.5 million Americans (roughly the population of texas) are addicted to alcohol and drugs. In other words‚ that’s about 1 in every 10 people over
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