Prepare 100mL of 2M MgO solution. i. What is the molarity wanted? ii. What is the volume of solution wanted in liters? iii. What is the molar mass of MgO? iv. What is the mass of MgO needed? v. What is the volume of water needed?
Prepare 100mL of 2M MgO solution. i. What is the molarity wanted? ii. What is the volume of solution wanted in liters? iii. What is the molar mass of MgO? iv. What is the mass of MgO needed? v. What is the volume of water needed?
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter12: Solutions
Section: Chapter Questions
Problem 12.52QP
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Question
Prepare 100mL of 2M MgO solution.
i. What is the molarity wanted?
ii. What is the volume of solution wanted in liters?
iii. What is the molar mass of MgO?
iv. What is the mass of MgO needed?
v. What is the volume of water needed?
Expert Solution
Step 1
i. The Molarity wanted is 2 M MgO.
ii. The volume of solution wanted is 100 mL = 100/1000 L = 0.1 Liter.
iii. The molar mass of MgO is the sum of atomic masses of magnesium and oxygen as -
24+16 = 40 g/mol
Hence, molar mass of MgO is 40 g/mol.
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