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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Transcribed Image Text:=.01002 mo
B. PREPARE 20 mL of ~ 1M Cacla.
50ml
using a balance, weigh out the calculated mass of CoCl₂ 21₂0
M = 2.00×10-4
Into a tared 150ml beaker. Record actual mass of Salt used.
Calculated actual masses should agree to + 1.0g of better.
Use a graduated cylinder to add 20.0ml of DI water to Flask.
Stir Solution w/ stirring rod or a stir bar & Stil plate until
the salt is fully dissolved.
A better description of the concentration of a solution
prepared
in this manner is weight percent (wt%.) units, calculated
as (g solute/g solution) x 100%, where g solution -g solute + g solvent
Calculate report wt% of Ca²t of this solution, water density
being 1.0 g/ml
24
Approximate mass of Calla-2H-0
Actual mass of Ca Cl₂ 2H₂0 weighed
Wt7. Cata
calculation
2.94
2.9470g
Chemistry 88, No. 3 (2016)
average mass per atom or w
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