08:04Mass Percent of a Solution Made Easy: How to Calculate Mass % or Make a Specific Concentrationketzbook653views1rank
03:27How To calculate Percentage Mass | Chemical Calculations | Chemistry | FuseSchoolFuseSchool - Global Education560views
Multiple ChoiceDetermine the percent composition of nitrogen and oxygen with nitrogen dioxide, NO2.2069views16rank1comments
Multiple ChoiceA 70.0-g iron nail combines with 30.0 g of oxygen to form rust. What is the total mass of the iron nail plus the rust that forms?301views
Multiple ChoiceThe following data were collected when analyzing a compound used in dentistry as a cement to repair teeth: 50.82% Zn; 16.04% P; 33.14% O What is the empirical formula of the compound?284views
Multiple ChoiceBased on the amounts of reactants used the calculated amount of product that can form for a given reaction was 20.76 g. When the reaction was carried out in a laboratory 17.34 g of product was recovered. What is the percent yield for this reaction?295views
Open QuestionA compound whose empirical formula is XF3 consists of 65% F by mass. What is the atomic mass of X?206views
Open QuestionWhat is the mass % of carbon in dimethylsulfoxide (C2H6SO) rounded to three significant figures?201views
Open QuestionWe dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution?196views
Open QuestionA 500 gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore?200views
Open QuestionA 69.5 g sample of the compound X3O4 contains 19.2 g of oxygen atoms. What is the molar mass of element X?192views
Open QuestionCalculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.197views
Open QuestionAspirin is a compound with the molecular formula C9H8O4. What is its percent composition?420views
Open QuestionCalculate the mass percent composition of nitrogen in each of the following nitrogen compounds.255views
Open QuestionCalculate the experimental mass % of c and h in the unknown liquid used in the experiment.531views
Open QuestionWhat is the percent by mass of chlorine in NaCl? Use mc002-1.jpg. 35.45% 39.34% 60.66% 70.90%242views
Open QuestionWhat is the mass percentage of C in CH3CH3? Provide an answer to two decimal places.250views
Open QuestionAn oxide of iron has the formula Fe3O4. What mass percent of iron does it contain180views
Open QuestionWhat is the mass percentage of c in caffeine, C8H10N4O2? Provide an answer to two decimal places.184views
Open QuestionWhich element is in the greatest amount in what is referred to as a starter fertilizer?165views
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