Problem Nitrogen dioxide is a component of urban smog that forms from gases in car exhaust. How many molecules are in 8.92 g of nitrogen dioxide?Plan We know the mass of compound (8.92 g) and need to find the number of molecules to convert mass to number of entities, we have to find the amount (mol). To do so, we divide the mass by the molar mass (M), which we calculate from the molecular formula. Once we have the amount (mol), we multiply by Avogadro’s number to find the number of molecules (see the road map).

Problem Nitrogen dioxide is a component of urban smog that forms from gases in car exhaust. How many molecules are in 8.92 g of nitrogen dioxide?Plan We know the mass of compound (8.92 g) and need to find the number of molecules to convert mass to number of entities, we have to find the amount (mol). To do so, we divide the mass by the molar mass (M), which we calculate from the molecular formula. Once we have the amount (mol), we multiply by Avogadro’s number to find the number of molecules (see the road map).

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter10: The Mole

Section: Chapter Questions

Problem 213A

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