test‚ which tested for all elements except oxygen. In the test‚ the test compound is broken down into its elements‚ which then bond individually with sodium. The presence of sulfur was tested either with lead acetate or sodium nitroprusside. The presence of nitrogen was tested with ferrous ammonium sulfate and potassium fluoride. The presence of any halogen was tested by a flame test with copper wire and the identification of the exact halogen was done using silver nitrate. Careful experimentation was
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assigned unknown solution through selective precipitation. This was a qualitative lab where the theory of the common ion effect was used in several steps. Once the experiment was completed‚ it was determined that unknown solution #4 contained Ba2+‚ Sr2+‚ and Mg2+ ions. INTRODUCTION Selective precipitation is a part of chemistry that allows for the qualitative analysis of ions present in a solution. A large industry that employs this type of chemistry is the mining industry. In the mining industry
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Pt. Teaching: Don’t continue this medication beyond 1-2 wk. It is potentially dangerous to self-medicate. Don’t take antacids longer than 2 wk without medical supervision. Avoid taking calcium carbonate with cereals or other foods high in oxalates. Oxalates combine with calcium carbonate to form insoluble‚ nonabsorbable compounds. Don’t use calcium carbonates repeatedly with foods high in vitamin D (such as milk) or sodium bicarbonate‚ as it may cause milk alkali syndrome: hypercalcemia‚ distaste
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The reduction of alkylhallides takes place in the presence of a) Zn/HCl b) Na/HCl c) Mg/HCl d) Cu/HCl 5.Deficiency of vitamin E causes a) rickets b) scurvy c) anemia d) night blindness 6.Which one of the following is reducing sugar? a) glucose b) maltose c) sucrose d) starch 7.Buildings are being damaged by acid rain because it attacks a) Calcium sulphate b) Calcium nitrate c) Calcium carbonate d) Calcium oxalate 8.Which one of the following salts makes water
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“The fragile relationship between the sexes is a dominant theme of the modern literature”. Evaluate this opinion by comparing and contrasting how relationships between the sexes are presented in the top girls and Hullabaloo in the Guava Orchard. Set at the time it was written‚ the early 1980’s‚ Top Girls is mainly concerned with two political agendas: feminism and socialism. It may seem surprising to us today that just over thirty years ago the Equal Pay Act and the Sex Discrimination Act came
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2006 to set up two multi fruit processing units at Hoshiarpur & Abohar. These plants are the first of its kind plants in the world to process different varieties of citrus as well as tropical fruits & vegetables like Tomato‚ Carrot‚ Melon‚ Mango‚ Guava‚ Pear‚ Sweet Gourd‚ Bitter Gourd‚ Aloevera and Amla etc. These plants are equipped to switch from one raw material to another in 4-5 hours time. These plants are also the only plants in India to de-bitter the fruit juices such as Kinnows & Mosambi
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Unit 18 B Study Guide 1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5. A) 1.59e–2 B) 2.53e–2 C) 6.64e–17 D) 2.01e–3 E) 2.01e–2 2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY? A) Nothing. B) HY is stronger than HX. C) HX is stronger than HY. D) The acids have equal strengths. E)
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conditions called? Urologist 2. What disease causes the kidneys to overcompensate by straining within the remaining nephrons? Chronic Renal Failure 3. What are most kidney stones composed of? calcium oxalate and calcium phosphate 4. What are three types of bladder stones? Struvite‚ calcium oxalate‚ urate‚ cystine‚ calcium phosphate‚ and silicate. 5. A constriction of the perputial orifice that does not allow for the foreskin to fold back over the glans is called? Phimosis 6. What is the term
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soluble in water but calcium carbonate is insoluble‚ the ionic equation for the reaction is that we present only the ions that react (after removing the spectator ions)we have the net equation as below CO32- (aq) + Ca2+(aq) CaCO3(s) From the balanced net ionic equation‚ 1 mole of carbonate ion from the 1 mole of Na2CO3.H2O(molar mass 124.00 g/mol)reacts with 1 mol of calcium ion from one mol of CaCl2.2H2O( molar mass -147.01g/mol). If the reaction proceeds to completion‚ the equation also predicts
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Sensor 1)‚ a water soluble‚ fluorescein based sensor is used as it has high selectivity and sensitivity for Hg2+. 2. The mechanism used is PET (Photo induced electron transfer). 3. Fluorescence intensity increases drastically for Hg2+ and not for other ions. Hence this method can be
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