# UNT CHEM 1415 - Solution Stoichiometry (2 pages)

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## Solution Stoichiometry

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## Solution Stoichiometry

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In preparation for the exam next class, the professor worked out several problems calculating molarity and number of moles in a solution.

Lecture number:
2
Pages:
2
Type:
Lecture Note
School:
University of North Texas
Course:
Chem 1415 - Gen Chem Engineers
Edition:
1
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Unformatted text preview:

CHEM 1415 1st Edition Lecture 2 Unit Solution Stoichiometry Outline of Current Lecture I Examples for test a Example 1 finding the number of moles in the molecule b Example 2 finding the molarity c Example 3 finding moles with volume given d Example 4 finding moles with volume given Current Lecture Example 1 Finding the number of moles in the molecule S8 g Molarity 8 32 256 mol 1 mol 18 3 g 0 04 mol 256 g Example 2 20 g of NaOH in 100 mL of solution What is the Molarity 1L 0 1 L 1000 mL 1 mol Number of moles 20 g 0 5 mol 40 g 0 5 mol mol molarity 5 5 M 0 1 L L 100 mL Na 1 23 23 O 1 16 16 H 1 1 1 Molar mass 40 g mol Example 3 How many moles of HBr are in a 40mL solution of water with a molarity of 1 5 M Moles of HBr Molarity Liters of solution 1L 1 5 M 40 mL 1000 mL 0 06 mol These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Example 4 How many moles of NaClO are in a solution of 750 0 mL with a molarity of 0 806 M moles of solute molarity Liters of solution moles of solute molarity Liters of solution mo l 1L 0 806 750 mL mL L 1000 0 605 mol

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