The percent yield of iron in 1.342 and a relative error of -3.0 % is: a. 33.3% b. 74.5% c. 12.4% d. 62.4% e. 24.8% 342 g of ore g of ore sample, if the method has an absolute error of -0.005 g كلية العلوم
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- Use the web to determine the differences in the amounts of aluminum recycled in states where there are deposits on aluminum cans versus states where recycling is voluntary. What is the most reliable way to estimate this value? mat uncertainty is there in the estimate?* 00 LL CO %23 6. What volume of 0.08892 M HNO3IS required to react completely with 0.2352 g of potassium hydrogen phosphate? HNO3(aq) + K2HPO4(ag)-H3PO4(aq) + KNO3(ag) L Display Settings F4 F5 F7 F8 F10 F11 F12 2$ 4. 5. 9. E R T YMy answer was 29.6%, why did i get it wrong? In 1928, 44.8 g of a new element was isolated from 660 kg of the ore molybdenite. The percent by mass of this element in the ore was: a. 6.6 % b. 44.8 % c. 0.0068 % d. 67 % e. 29.6 %
- KEŚLER SCIENCE Draw a model with shapes to represent the total number of OUTPUTIllustrate It! STATION atoms in the chemical equation: SO3 + H20 > H,SO4 See the next page for help on inserting pictures into the page. Go to Image Help ENotes 品 响 85% 5:47 11/11/ DELL F3 F4 F5 F6 F7 F8 F9 F10 F11 PrtScr F12 Insert Home End Del 2# $ & 4 Backs 6 8 9. E Y P { D J K L N Alt Ctrl Page UpNO. DATE Determine the theoretical yield of a substa nce i the actual yield and is 3.59 the percent yiebd is 32.25°%6 a: 10.659 b. ユ45g 3-819 d. Determine the actual uield of a substance if only 9s:17% 'from the 185.229 was obtained in the bxperiment? propected a. 202.729 b.134.0€ a c. 176:28á d. 222-(68gMla pnc.com/women Mail - Whi x O Grades for x Course Ho X G oxide cont X G Exercise 4.x E 4 - Molecu x O Bananas a X 1.84 x 10- x + envellum.ecollege.com/course.html?courseld 16985674&OpenVellumHMAC=a0b841caaee7feddab1623a6c83a92c0#10001 Review | Constants I Periodic Table Percent composition refers to the mass percent of each element in a compound: mass of element Part A mass percent = x 100% mass of compound > For example, the percent composition of water, H2O. is 11.2% hydrogen and 88.8% oxygen. Therefore, a 100-g sample of water contains 11.2 g of hydrogen atoms and 88.8 g of oxygen atoms. A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: CH22 Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas. The periodic table will be useful when doing this problem. You can access a periodic table by clicking the "Tools" link in the upper right…
- 6 A5.301 g of sample of a mixture containing MgSO, 7H,O (MM-246.5) and NaCI (MM-58.44) yielded 3.784 g a solid residue after this mixture was heated. Given this information, how many grams of sodium are in the mixture? Report the answer to 3 significant figures. Type your answer...5) 3) 2) Percentage Composition Worksheet Give the % composition of all elements in these compounds. Show all work! 1) ammonium sulfite % N % H sodium bromide aluminum acetate % Al % C 4) copper (II) hydroxide % S % O magnesium carbonate % H % O % Na % Br M_ For chemistry help, visit http://www.chemfiesta.com % Cu % O % H % Mg % C % O O Ma 9.8 ebinayo muiaestog Llobiriqaoriq muinul (Ot 2 (8 etellua (III) lexoin Ⓒ2000 Cavalcade Publishing - All Rights ReservedHelp 100% 4A To Public Health Ch x * HSC 258 - Major Projec X MindTap - Cengage Lea X C The Illustration To TH d%=55750828934189288909969212&elSBN=9781305657571&id=D1061392007&nbld=21... * Q Search th References Use the References to access important values if needed for this question. For the following reaction, 24.7 grams of sulfur dioxide are allowed to react with 9.95 grams of oxygen gas . sulfur dioxide(g) + oxygen(g) → sulfur trioxide(g) What is the maximum mass of sulfur trioxide that can be formed? grams What is the FORMULA for the limiting reagent? grams What mass of the excess reagent remains after the reaction is complete? Submit Answer
- SICI4 + O2 SiO2 + Cl2 The table shows an experimental record for the above reaction. Experimental Record Trial Starting Amount of SiCIA Starting Amount of O2 Actual Yield of SiO2 100 g 32.96 g 1 100 g 25.2 g 75 g 50 g a. Calculate the percentage yield for SiO2 for Trial 1. Also, determine the leftover reactant for the trial. Show your work. b. Based on the percentage yield in Trial 2. explain what ratio of reactants is more efficient for the given reaction.ne Wrong (L) - X Gcalculator-Google Search nt/d/1PrqdNDx-hBYyzKo-xfiM9-Jlq7EAaWe3GBt_t3U3jDo/edit n Calculator A Land of Permane... Last edit was seconds ago BIUA E EX | 1 . | 5. How many moles of iron would have to react to produce 3.5 moles of ron (III) oxide? 3.5 moles Fe.O, 2 moles Fe O. 4 moles Fe1. Iron reacts W/Water to Produce grams of troncii) oxide are Produced How many grams of iron are needed? a. Balance equation- 2Fet + H20-Fez03 B. Road/mole map wlarrows- C. Fence Post conversion-
