Answered: Prepare 100mL of a 2M MgO (magnesium…

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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Question

Prepare 100mL of a 2M MgO (magnesium oxide) solution.

i) what is the molarity wanted?

ii) what is the total volume of solution wanted (in LITERS)?

iii) What is the molar mass of MgO?

iv) What is the mass of MgO (solute) needed?

v) What is the volume of water (solvent) needed?

Expert Solution

Step 1

Molarity (M) can be defined as the number of moles of solute that can be dissolved in the one litre of solution. The unit for molarity is mol/L or M. The formula for molarity can be represented as;

$Molarity = \frac{Moles of solute}{Volume of solution (in L)}$

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