Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter14: Mixtures And Solutions
Section: Chapter Questions
Problem 74A: How much CaCl2 , in grams, is needed to make 2.0 L ofa 3.5M solution?
Related questions
Question
What is the molarity of a 3.00% (m/v) solution of C13H18ClNO?
Expert Solution
Step 1
Since %(m/v) is defined as
% (m/v) = mass of solute in g X 100 / volume of solution in mL
Assuming the volume of solution is 100 mL
=> mass of solute (C13H18ClNO) = % (m/v) X volume of solution in mL / 100 = 3 X 100 / 100 = 3 g
Since molar mass of C13H18ClNO = 239.74 g/mol approx
Hence moles of C13H18ClNO = mass / molar mass = 3 / 239.74 = 0.0125 approx
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