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e LO G chegg Study I Gu x G chegg Study l G. × e 2eIC , Lesson . Chegg LON-CAPA Pradu N-CAPA Molar × x x · http://ne hem sfu ca res/sfu atcheloche 111 probler sie ture sete o de 2x2 problem?sym upo de %2 fs 2t 3189. g e st -Volunteer-Northw L Messages Courses Help Logout mbra: . artofsaunacaBC SPCA: 8C SP A Course Heron vancouver Aquariure Volunteer . Maplen Chem110-111 2017-3 Lecture Sohyun Oher(student -section : D100) ain Menu Contents Grades Syllabus O Timer Notes à Evaluate e,Info Feedback Print » Assignment 5 » Product Composition and Reaction Stoichiometry course contents » Due in 43 minutes 5 homework pointis) Product Composition and Reaction Stoichiometry suppose FeS and O2 react to produce SO2, and an iron oxide which contains 69.94% iron by mass. Complete the reaction equation by entering the coefficients of the reactants and products and also the empirical formula of the iron oxide product. FeS + O2 SO2 + . Note that, while it is not usual to write coefficients of exactly 1, you must enter .1" in the response box, if that All coefficients must be reduced to the smallest possible integers is the correct value The formula water would be entered simply as "H20) for the iron oxide must be written with the Fe symbol first and o second. The usual subscription of numbers in the formula is to be inferred (e.g. the formula for Submit Answer Tries 0/10 send Feedback Post Discussion 11:15Explanation / Answer
mass % of Fe in iron oxide = 69.94%
so that, for 100 g iron oxide.it contains 69.94 g iron
no of mol of Fe = 69.94/56 = 1.25 mol
no of mol of O in sample = (100-69.94)/16 = 1.88 mol
simplest ratio,
Fe = 1.25/1.25 = 1
O = 1.88/1.25 = 1.5
simplest whole number ratio,
Fe =2 , O = 3
empirical formula = Fe2O3
balanced equation : 4FeS + 7O2 ---> 4SO2 + 2Fe2O3
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