Mas te r i ngChemis t r y : Homework #49/23/19. 11:34 AM

Exercise 3.68 - Enhanced - with Feedback

MISSED THIS? Read Section 3.8 (Pages 111 - 113); Watch tWE 3.13.

Calculate the mass (in grams) of each sample.vMol JCJ'O

P a r t A

7.3x10 03 moleculesExpress your answer to two significant figures and include the appropriate units. y:Q (G-OOa n s w e r : ^ 8 - O O ^ i

W O )

m o - , = 7 / ( o I haoI O? 'S^O0^0sU o l

P a r t e

6.93x10^® CCI2F2 molecules

Express your answer to three significant figures and include the appropriate units.A N S W E R :

? n c c i 2 F 2 =

- 5 80^^ 8?0

P a r t C

3 water molecule(s)

Express your answer to four significant figures and Include the appropriate units.A N S W E R :

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- -

u o =

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