removed (approximately 15 minutes). If irritation or pain persist seek medical attention Cyclohexane Test tube Toxic Eye and skin contact with liquid causes pain and irritation. Repeated skin contact degreases the skin and may cause cracking Ammonia Test tube Toxic May explode if heated for too long. Corrosive to eyes and skin and toxic if inhaled Immediately
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precipitate forms and ensures the presence of that cation. When testing my unknown solution‚ the lead (II) ion was not present in my solution. To further separate the cations‚ 1.0 mL of 6 M NH3 is added to the saved precipitate. After adding the ammonia‚ the mixture is centrifuged and the liquid is once again decanted into another test tube. If a gray or black precipitate forms‚ this proves the presence of Hg22+. The mercury (I) ion was present in my
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CHEMISTRY PROJECT 2013/2014 NAME: OSANYINTUYI MOTUNRAYO ESTHER DEPARTMENT: COMPUTER SCIENCE FACULTY COMPUTER SCIENCE AND MATHEMATICS PROJECT TITLE DETERMIATION OF TOTAL HARDNESS IN ILARA COMMUNITY DRINKING WATER TABLE OF CONTENT. ABSTRACT INTRODUCTION MOTIVATION LITERATURE REVIEW PROBLEM STATEMENT EXPERIMENT RESEARCH QUESTIONS DISCUSSION CONCLUSION ABSTRACT This project was done to determine the total hardness of ilara mokin water to show the usefulness
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Analysis of the Elements present in Organic Compounds Lab#1 [pic] Name: Mark Morey Date Done: 2nd February‚ 2011 Due Date: 9th February‚ 2011 Title: Analysis of the Elements present in Organic Compounds Aims: To test the presence of Carbon‚ Hydrogen‚ Oxygen‚ Nitrogen and Sulfur in Organic Compounds Introduction: Organic Compounds can be considered as any compound containing carbon atoms covalently bonded with other atoms‚ usually hydrogen. Other atoms may include oxygen‚ nitrogen
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follows: Test tube Known Solution 1 PO43-‚ phosphate 2 SO42-‚ sulfate 3 Cl-‚ chloride 4 Be sure to record the results of your tests in your notebook. NO3-‚ nitrate Next‚ make each solution slightly basic by adding 5 M ammonia (NH3) dropwise. Making sure the solution is thoroughly mixed‚ test the basicity of the solution with litmus paper as demonstrated by your instructor. When the solutions are basic‚ note any changes that have occurred‚ and enter your observations
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vertebrates do not live in water‚ they need to develop a means of conserving water. One way we do this is through our excretions. Nitrogen forms a major waste product in animals. When amino acids and nucleic acids are broken down‚ they release toxic ammonia (NH3). To rid the body of this toxin‚ several mechanisms have evolved‚ each appropriate to the habitat or survival of the animal. Aquatic animals secrete NH3 directly into the surrounding water. Land animals cannot do
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MAJENGO SECONDARY SCHOOL CHEMISTRY TEST FORM VI JULY 2013 TIME: 2 HOURS SECTION A Answer all questions 1. a) A coordination compound has a formula Co Cl3. 4NH3. It does not liberate ammonia but precipitates one mole of chloride ions with Ag No3. i. Give IUPAC name of the complex ii. Write it’s structural formula a) Give chemical tests to distinguish [Co Br (NH3) 5] S04 and [Co (NH3)5 SO4] Br 2. Give IVPAC Names of the following i. K2 [ptF6] ii
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the brine shrimp by adding drops of vinegar‚ bleach and ammonia to the controlled water. We found that the vinegar was the most effective and the quickest. The ending results were very interesting when being compared to our hypothesis and we learned that some chemicals can react faster than others and each contains a different level of concentration. HYPOTHESIS: For brine shrimp exposed to increasing concentrations of three chemicals‚ ammonia will have the highest LC-50 (toxicity)‚ bleach will have
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Selective precipitation of the Barium Magnesium Group Chem 112-004 Abstract The purpose of this experiment is to separate and identify the cations of Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+ using differences in solubility and confirming test to identify the unknown solution used in this experiment. In this experiment the methodology used by the group is to perform the tests for both the unknown and the cations (Ba+‚Sr2+‚Ca2+‚ Mg2+ and NH4+) using the known as a control for comparison and identification
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hydrochloric acid to a small amount of solid KA1‚ then warm gently. (b) Dissolve solid KA1 in distilled water and filter. Use separate portions of the filtrate for the following tests. (i) Add aqueous sodium hydroxide‚ then in excess. (ii) Add aqueous ammonia‚ then in excess followed by aqueous ammonium chloride. (iii) Add aqueous iron (III) chloride‚ then warm. (iv) Add aqueous silver nitrate‚ followed by dilute nitric acid. (v) Add aqueous disodium hydrogen phosphate. (vi) Add aqueous potassium chromate
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