## Solution for problem 6 Chapter 5

# In a chemical formula, how do you calculate the number of atoms of an element within

Introductory Chemistry | 4th Edition

In a chemical formula, how do you calculate the number of atoms of an element within parentheses? Give an example.

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CHEM 1112 Dr. Martín Zysmilich Class Notes for February 2-4 Entropy (February 2) Units of enthalpy: kJ/mol Units of entropy: J/K∙mol 3 Law of Thermodynamics: the entropy of a perfect crystal of any substance at 0 K is equal to 0 o All molecules in the system have a fixed position; only one possible arrangement o Also, all molecules are in the lowest energy state possible: no translational or rotational energy (no kinetic energy) and lowest possible vibrational energy o Increased temperature increases entropy; therefore, entropy has an absolute value because it can be compared to the absolute value of 0 at 0 K E

###### Chapter 5, Problem 6 is Solved

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In a chemical formula, how do you calculate the number of atoms of an element within