2 A colorless crystalline compound when dissolved in water formed a colorless solution.This compound was heated in a clean, dry test tube. This heating produced several drop-lets of water on the upper region of the test tube. The residue was dissolved in water andformed a yellow-brown solution.Determine if this colorless crystalline compound is a true hydrate or not.а.b.Give reasons.3. A student heated an unknown hydrate, Na,SO4•XH,O, in a crucible. The water was drivenoff, leaving the anhydrous salt in the crucible. After cooling, the mass of the anhydroussalt and water lost was calculated. The mass of the anhydrous salt was 0.695 g and themass of water lost was 0.895 g.Calculate the moles of anhydrous salt in the sample. Show all steps. (The molar massof this salt is 142.04 g.)а.45

Mass of water loss = 0.895 g mass of anhydrous salt = 0.695 g MW of anhydrous salt = 142.04 g/mol…

3. A student heated an unknown hydrate, Na,SO4 XH,0, in a crucible. The water was driven off, leaving the anhydrous salt in the crucible. After cooling, the mass of the anhydrous salt and water lost was calculated. The mass of the anhydrous salt was 0.695 g and the mass of water lost was 0.895 g. a. Calculate the moles of anhydrous salt in the sample. Show all steps. (The molar mass of this salt is 142.04 g.)

3. A student heated an unknown hydrate, Na,SO4 XH,0, in a crucible. The water was driven off, leaving the anhydrous salt in the crucible. After cooling, the mass of the anhydrous salt and water lost was calculated. The mass of the anhydrous salt was 0.695 g and the mass of water lost was 0.895 g. a. Calculate the moles of anhydrous salt in the sample. Show all steps. (The molar mass of this salt is 142.04 g.)

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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