Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided
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Sources of Error
Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided
Not all solid was transferred during the filtration of the precipitate. EX ___ ET
After heating, the crucible was weighed without cooling. EX ___ ET
Filter paper was dried prior to filtration. EX ___ ET
Step by step
Solved in 4 steps
- Data Mass of unknown metal Cark te ?l.005g Volume of uniknown solotion CmL) Volume of HCI added Inital burct readinglmL) Final buret reading (mL) 20.00ML (mL) 15.00mL 20.SSmL 30.90ML Volume Na OH delivered (m L) Concentration of HCI: O.1708M Concentrahon of NaOH: O.1000M * Pipetted 10.35mL 20.00mL Of solution prepared in 250.0 mL volumetric flask Questions', 1. Calalate the number of moles of Na OH used for back titration? 2. Calculate the number of moles moles of metal carbonate present in 20.00mL portion of the metal Carborate soltion? 3. Calculate molar masS of 3.Calculate in knon metal carbongte: Egbabl Qe A Solution is Prefared Tby dissdlving 6g AgNoz ina 250-ml Volumetric Hask and diliting the molaurity of the Silver nityate Solution How to Volume. alculute Many millimoles Ag No3. Were dissalved7 twt Ag Noz 169-9Hatrcent Yeild Kami Export - % yield WS-1 (1).pdf wnload Percent Yeild Kami Export % yield WS-1 (1).pdf (147 KB) 1. When 5.45 grams of aluminum chlorate (Al(CIO;); decompose, 1.57 liters of oxygen gas are given off. What is the percent yield? Al(CIO;); AICI3 + O2 VI. Practice 1. What is the percent yield of the following reaction if 60 grams of CaCO3 is heated to give 15 grams of CaO? COD Sign out
- The mercury in a 0.8142-g sample was precipitated with an excess of paraperiodic acid, H5IO6: 5 Hg 2+ + 2 H5IO6 ---> Hg5(IO6)2 (s) + 10 H + The precipitate (MW = 1448.8 g/mol) was filtered, washed free of precipitating agent, dried, and weighed, and 0.4114 g was recovered. Calculate the a) % Hg (200.6 g/mol) b) % Hg2Cl2 (472.1 g/mol)119 X My Course X Macmillan: X Course Mo X What is the FORMULA for the limiting reagent? Submit Answer Sections 5 X .com/static/nb/ui/evo/index.html?deploymentid=5735112480241329813180832311&elSBN=9781305862883&id=1707786042&snapshoti... Use the References to access important valdes ir needed for this question. 900 For the following reaction, 9.43 grams of carbon (graphite) are allowed to react with 28.5 grams of oxygen gas. carbon (graphite) (s) + oxygen (g) carbon dioxide (g) What is the maximum amount of carbon dioxide that can be formed? What amount of the excess reagent remains after the reaction is complete? HOMEWOR X MacBook Air MindTap - C X GI grams gramsEach of these reactant pairs may or may not react. If the reaction will happen, write the complete balanced chemical equation. If it won't happen, state the reason why not. a. Pb(s) + Al2(CO3)3 > b. Na + K→ B I u、ケ=▼ 三v = of Paragraph + v ... Lato (Recom.. 19px EQ 12 Add a File Record Audio Record Video
- Fluorite, a mineral of calcium, is a compound off the metal with fluorine. Analysis shows that a 43.35-g sample of fluorite contains 21.11 g of fluorine. Calculate the following: (a) Mass of calcium in the sample. g Ca (b) Mass fractions of calcium and fluorine in fluorite. Calculate to 3 significant figures. mass fraction Ca mass fraction F (c) Mass percents of calcium and fluorine in fluorite. Calculate to 3 significant figures. mass % Ca mass % FA^ A B Av • E E EV ... Example 3: When a 5.00 g sample of commercial sodium bicarbonate (baking soda ) was treated by volatilization gravimetry the mass of CO, absorbed by the NaOH tube was 2.40 g. Calculate % NaHCO, in baking soda sample.Molten iron and carbon monoxide are produced in a blast furnace by the reaction of iron(lI) oxide and coke (pure carbon). The reaction is: Fe203 + 3 C ---> 2 Fe + 3 CO If 25.0 kilograms of pure Fe203 is used, how many kilograms of iron can be produced? Paragraph В I U v A + v の EQ Lato (Recom... 19px ... Record Video Add a File Record Audio -13°C 99+
- How would I solve Problem 4? I have the excel graph as provided. Need to get the %Mn I have some small idea but think is wrong... would be... %Mn = 500mL * 1molMn/ g MnO4 * 1molMn/1molMnO4- * gMn/1molMn * 100%/SampleMassg(in ML) evo/index.html?deploymentld%35575082893418928890996 2&elSBN=9781305657571&nbld%3D2199898&snapshotld%3D21998... * INDTAP Q Search this co Use the References to access important values if needed for this question. Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard. Its formula is H2C204•2H2O. A student dissolves 0.210 grams of H,C,O4•2H¬O in water and titrates the resulting solution with a solution of sodium hydroxide of unknown concentration. If 27.3 mL of the sodium hydroxide solution are required to neutralize the acid, what is the molarity of the sodium hydroxide solution ? M Submit Answer 5 question attempts remaining NeA bbhosted.cuny.edu/webapps/assessment/take/take.jsp?course_assessment_id=_1... R Paused E Apps G Gmail O YouTube O Maps Home Take Test: Test #1 * Question Completion Status: A MOving to the next question prevents cnanges to tnis answer. Question 4 of 20 > Question 4 4 points Save Answer What is the density of a solid sample that increased the volume of 25.2 mL of water to 34.9 mL when placed in the graduated cylinder and weighs 13.34 g? O A. 0.52 g/mL O B. 0.38 g/mL OC. 1.37 g/mL O D.0.73 g/mL A Moving to the next question prevents changes to this answer. Question 4 of 20 13,846 MAR étv S esc F2 F3 F4 F5 F6 F7 @ %23 24 2 & Q W E R Y II