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Physics / University Physics 13 / Chapter 18 / Problem 27E

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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How many moles are in a 1.00-kg bottle of water How many

Chapter 18, Problem 27E

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QUESTION:

How many moles are in a 1.00-kg bottle of water? How many molecules? The molar mass of water is 18.0 g/mol.

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QUESTION:

How many moles are in a 1.00-kg bottle of water? How many molecules? The molar mass of water is 18.0 g/mol.

ANSWER:

Solution 27E Step 1 of 2: How many moles are in a 1.00-kg bottle of water The molar mass M of a compound is the mass of 1 mole. It is equal to the mass m of a single molecule multiplied by Avogadro’s number, Molar mass of water, M= 18 g/ mol Which means 18g of water is equal to 1 mole Mass of water, m= 1kg = 1000 g 1000 g Therefore 1000 g of water is equal to 18 g/mololes That is, number of moles are in 1 kg(1000 g) of water is , = 55.55 moles

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