30.0 g of K2Cr2O7 is completely dissolved in 50.0 g of hot H2O. This solution is then cooled to 20 °C. What mass of K2Cr2O7 would precipitate?Provide your answer rounded to 2 significant figures. (Incorrect)1009080NANO370605040KCINaCl3020KCIO310Ce,(SO4)310 20 30 40 50 60 70 80 90 100Temperature (°C)Solubility (g/100g H,O)CaClzPb(NO3)2KNO3K2Cr,07

Mass of K2Cr2O7 = 30 g Mass of water = 50 g Mass precipitated out at 20°C = ?Mass of precipitated out K2Cr2O7 is about 24 g.

Answered: 30.0 g of K2Cr2O7 is completely…

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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30.0 g of K₂Cr₂O₇ is completely dissolved in 50.0 g of hot H₂O. This solution is then cooled to 20 °C. What mass of K₂Cr₂O₇ would precipitate?
Provide your answer rounded to 2 significant figures.

(Incorrect)
100
90
80
NANO3
70
60
50
40
KCI
NaCl
30
20
KCIO3
10
Ce,(SO4)3
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
Solubility (g/100g H,O)
CaClz
Pb(NO3)2
KNO3
K2Cr,07

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