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Chapter 6 exercises

Chapter 6 exercises - a 6.022x10 23 b Same answer 4 How...

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Chapter 6 exercises The book gives answers to odd problems only. Because of the large number of problems, only the question section is shown. My answers to every question are represented with a. and the book’s is represented with b. 1. Why is chemical composition important a. The order and number of each atom in a compound determines all the physical properties of the atom b. It provides an analysis of an element found within a compound 2. How can you determine the number of atoms in a sample of an element? Why is counting them not an option. a. You have to rely on mass, because there are so many atoms that its impossible to count the number of atoms even in a single grain of sand. 3. How many atoms are in 1 mol of atoms?
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Unformatted text preview: a. 6.022x10 23 b. Same answer 4. How many molecules are in a mole of molecules a. Same answer as question 3 5. What is the mass of 1 mol of atoms for an element? a. The atomic wait of the element in grams. So 1 mol of hydrogen is 1.01 g, 1 mol of oxygen is 16.00 grams b. A mass in grams that is equal to the mass of the atom in atomic mass units 6. What is the mass of 1 mol of molecules for a compound? a. Same as answer above, but account for each element and the number of each element in the compound 7. What is the mass of 1 mol of atoms of each of these elements: P, C, Pt, Cr? a. P=30.97 g, C=12.01 g, Pt=195.08 g, Cr=52.00 g b. Same answer...
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