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%? Lab Report Sheet:Part A: Determination of Mass Percent of Iron (Fe)Mass of evaporating dish and unknown sampleMass of evaporating dishMass of original sampleMass of evaporating dish after removing iron fillingsMass of FePercent of Fe in sampleCalculations:Part B: Determination of Mass Percent of Sodium Chloride (NaCl)Mass of (NEW) evaporating dish, watch glass, and NaClMass of evaporator dish, watch glassMass of NaClPercent of NaClCalculations:Part C: Determination of Mass Percent of Silicon dioxide (SiO₂)Mass of evaporating dish and SiO₂Mass of evaporating dishMass of SiO2Percent of SiO2Calculations:%do%%

We need to set up the equations for Part A, B and C.

Answered: Lab Report Sheet: Part A: Determination…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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%?

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:
%
do
%
%

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