mass of the empty crucible from the mass of the hydrate and crucible gives the mass of the CuSO4 hydrate. Mass of hydrate = (mass of crucible + hydrate) - (mass of empty crucible) 2.Heat the hydrate. After heating‚ record the mass of the crucible and the dehydrated compound. No calculations for this step 3.Subtracting the mass of the empty crucible from the mass of the crucible and dehydrated CuSO4 gives you the mass of the dehydrated compound. Mass of dehydrate = (mass of the crucible
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There are five reactions that the copper will go through. 1. Cu(s) + 4HNO3(aq) --- Cu(NO3)2(aq) + 2H2O(aq) + NO2(aq) 2. HNO3(aq) + NaOH(aq)--NaNO3(aq) + H20(l) 3. Cu(OH)2(s)--CuO(s) + H2O(l) 4. CuO(s) + H2SO4(aq)-- CuSO4(aq) +H2O(l) 5. CuSO4(aq) + Zn(s)-- ZnSO4(aq) + Cu(s) At the end of reaction number five we should have close to 100% of the copper we started out with. Result Original Mass of Cu=.452g Mass of Cycled Cu=2.483g 1. In the first reaction oxidation-reduction
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chloride (salt)‚ and iron. Copper sulfate is a chemical compound which is produced commercially by reacting various copper (II) compounds with sulfuric acid [1]. It generally appears as a bright blue or green crystal [1]. Its chemical formula is CuSo4. Iron is silver-white magnetic metallic and readily rusts in moist air [3]. Its chemical formula is Fe. The chemical reaction was demonstrated by the iron reacting to the copper sulfate.
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possible to find the rate of reaction and k. To perform this experiment‚ you need two erlenmeyer flasks‚a timer‚ a LabQuest with a temperature probe‚ two beakers‚ ice‚ distilled water‚ starch solution‚ 0.200 M of KI‚ 0.005 M of Na2S2O3‚ 0.200 M of KNO3‚ 0.100 M of K2S2O8‚ 0.100 M of (NH4)2SO4‚ and 0.100M Cu(NO3)2. Students will first mix a specific amount of a combination of different concentrations of instructed chemicals and wait for the mixture to turn blue. During this time‚ students will swirl
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Aim: To know the procedure of measuring the accurate mass of a solid To calculate the number of moles of an unknown mass from its mass and molecular mass To know how to dilute a solution and the effect of dilution on the solution’s absorbance Materials: Copper Sulfate Coloured solution – Potassium Manganate (KMnO4) Hotplate Method: Part A: The Formula of Hydrated Copper (II) Sulfate Firstly‚ about 1.0 g of hydrated copper (II) sulfate was put in the weighing bottle and the colour
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Chemistry Take home test May 4‚ 2013 In a laboratory experiment‚ a student reacted 2.8 grams of Fe (s) (steel wool) in excess CuSO4 (aq)‚ according to the following balanced equation: Fe(s) + CuSO4 (aq) -> FeSO4 + Cu(S). When the Fe(s) was completely consumed‚ the precipitated Cu had a mass of 3.2 grams. Did the student’s result on this experiment verify the mole ratio of Fe(s) to Cu as predicted by the
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HOW TO USE A SCIENTIFIC CALCULATOR How to use a Scientific Calculator: entering expression‚ angle measure‚ number formats‚ arithmetic operators‚ positive numbers‚ negative numbers‚ scientific notation‚ parentheses‚ chemical formulae‚ physical constants. Entering expression Type your expression directly onto the input line or copy and paste an expression from another programs. When you finish entering your expression‚ pres ENTER or click [=] button. Spaces are irrelevant‚ for example 54 + 3*2
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Solution becomes darker Part D Observations Mixture goes back to its natural state Part E Observations Bubbling Heat is generated Liquid is clear In-Lab Discussion 1) A. Cu (NO2)2 Cu (OH)2 B. Cu (OH)2 CuO C. CuO CuSO4 D. CuSO4 Cu0 Post Lab Discussion 2) 1.95/0.91*100= 214%; we were not able to verify the Law of Conservation of Mass within 5% of the
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sulfate. If combined with a reducing sugar and heated‚ the divalent copper ion Cu of copper sulfate is reduced to the monovalent copper ion of cuprous oxide Cu2O which forms a precipitate ranging in color from green to brick red. Glucose + CuSO4 + heat -------------- Cu2O + H2O + oxidized glucose • Lipids such as fats and oils are important in cell membranes and also as an energy reserve. They produce translucent spots on paper. In addition they dissolve a non-polar Sudan III /IV dye
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of this lab was to be able to predict the phase of matter after a double replacement reaction‚ what the products were‚ and if the reaction was completed or not. Materials and Methods - • .1 M NaCl • .1 M AgNO3 • .1 M Na3PO4 • .1 M NaOH • .1 CuSO4 • Five droppers • Spot Plate • Pen/Pencil • Paper • Goggles • Apron Safety Precautions – • Wear goggles and apron at all time while inside the lab. • You may use rubber gloves o protect your hands from the chemicals that will be used in
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