Lab Report Sheet: Part A: Determination of Mass Percent of Iron (Fe) Mass of evaporating dish and unknown sample Mass of evaporating dish Mass of original sample Mass of evaporating dish after removing iron fillings Mass of Fe Percent of Fe in sample Calculations: Part B: Determination of Mass Percent of Sodium Chloride (NaCl) Mass of (NEW) evaporating dish, watch glass, and NaCl Mass of evaporator dish, watch glass Mass of NaCl Percent of NaCl Calculations: Part C: Determination of Mass Percent of Silicon dioxide (SiO₂) Mass of evaporating dish and SiO₂ Mass of evaporating dish Mass of SiO₂ Percent of SiO₂ Calculations: % % 1111 %
Lab Report Sheet: Part A: Determination of Mass Percent of Iron (Fe) Mass of evaporating dish and unknown sample Mass of evaporating dish Mass of original sample Mass of evaporating dish after removing iron fillings Mass of Fe Percent of Fe in sample Calculations: Part B: Determination of Mass Percent of Sodium Chloride (NaCl) Mass of (NEW) evaporating dish, watch glass, and NaCl Mass of evaporator dish, watch glass Mass of NaCl Percent of NaCl Calculations: Part C: Determination of Mass Percent of Silicon dioxide (SiO₂) Mass of evaporating dish and SiO₂ Mass of evaporating dish Mass of SiO₂ Percent of SiO₂ Calculations: % % 1111 %
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section: Chapter Questions
Problem 102GQ: Cloth can be waterproofed by coating it with a silicone layer. This is done by exposing the cloth to...
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I have lab tomorrow, and we will be doing these. I just want to verify that I am setting up the equations correctly, so I don't stumble in class.
For example, in Part A- to determine what the mass of the evaporating dish is AFTER removing the iron fillings, is the equation: (dish+sample)-(dish)-(sample)= mass of evaporating dish after removing iron fillings?
And for the mass of FE, wouldn't that just be 55.85 from the periodic table? Or is it wanting me to calculate something?
And for the percent of Fe in the sample, would I set it up as -- Mass of Fe/(massofdish+sample)x100%?
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