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CHAPTER 10 THE MOLE. Time for the math part of chemistry!

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Presentation on theme: "CHAPTER 10 THE MOLE. Time for the math part of chemistry!"— Presentation transcript:

1 CHAPTER 10 THE MOLE

2 Time for the math part of chemistry!

3 To use chemistry in real-life…you need numbers!

4 What is a “dozen?”

5 602,000,000,000,000,000,000,000

6 Which weighs more a kilogram of feathers, or a kilogram of bowling balls? Which weighs more a mole of feathers, or a mole of bowling balls?

7 How big is a MOLE OF MARBLES?

8

9 North Building Lobby

10 Baltimore City

11

12 The tallest mountain in the Rockies

13 What is the purpose of having this huge number? and why this particular number?

14 You want to buy oranges….

15 You can buy them individually, e.g., by the dozen…

16 Lab Procedure: 1. Weigh out a molecule of water

17 REVIEW: What is an atomic mass unit? (an AMU)

18 How much does a molecule of water weigh?

19 1.00 atomic mass unit = 1.6605 x 10 -24 grams

20 Our best balance at Bryn Mawr weighs to 0.001 grams

21 Time for Dimensional Analysis!

22

23 You can buy them by the pound…

24

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