Significant figures are important! Remember that zeros are often significant and must be counted! A fictional compound contains potassium, a fictional metal, Z , oxalate and water. It is a hydrate. Its general formula is K2Zy(C2O4)z . nH2O. As you can see, the subscript for the potassium is given, but the other subscripts are unknown, as well as the number of water molecules per formula unit (n). A sample of the unknown compound was placed in a weighed drying pan and heated to give the data below. Use this data to find out the % water in this compound. The experimental data: Mass of the drying pan = 1.445 gMass of drying pan and compound (Before Heating) = 7.175 g Mass of drying pan and compound (After Heating) = 6.865 g Calculate the % Water (by mass) in this compound.1.b)The literature (actual) value of % water = 5.399 %. Comment on errors in this experiment.

Given that the experimental data: Mass of the drying pan m1= 1.445 g Mass of drying pan and…

Answered: sample of the unknown compound was…

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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Significant figures are important! Remember that zeros are often significant and must be counted!

A fictional compound contains potassium, a fictional metal, Z , oxalate and water. It is a hydrate. Its general formula is K₂Z_y(C₂O₄)_z . nH₂O. As you can see, the subscript for the potassium is given, but the other subscripts are unknown, as well as the number of water molecules per formula unit (n).

A sample of the unknown compound was placed in a weighed drying pan and heated to give the data below. Use this data to find out the % water in this compound.

The experimental data:

Mass of the drying pan = 1.445 g

Mass of drying pan and compound (Before Heating) = 7.175 g

Mass of drying pan and compound (After Heating) = 6.865 g

Calculate the % Water (by mass) in this compound.

1.b)The literature (actual) value of % water = 5.399 %. Comment on errors in this experiment.

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