3. Nitrogen dioxide is a major pollutant that comes from vehicle exhaust and forms nitric acid. a) What is the molar mass of nitrogen dioxide, NO2? Just give answer w/units b) Calculate the number of molecules in a 63.0 µg sample of nitrogen dioxide, NO2. Show work using dimensional analysis and give answer with correct sig.figs. c) How many moles of O atoms are present in a mole of NO2? d) Calculate the number of O atoms in a 63.0 µg sample of nitrogen dioxide. Show work using dimensional analysis and give answer with correct sig.figs.

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3. Nitrogen dioxide is a major pollutant that comes from vehicle exhaust and forms nitric acid.
a) What is the molar mass of nitrogen dioxide, NO2? Just give answer w/units
b) Calculate the number of molecules in a 63.0 µg sample of nitrogen dioxide, NO2.
Show work using dimensional analysis and give answer with correct sig.figs.
c) How many moles of O atoms are present in a mole of NO2?
d) Calculate the number of O atoms in a 63.0 µg sample of nitrogen dioxide.
Show work using dimensional analysis and give answer with correct sig.figs.
Transcribed Image Text:3. Nitrogen dioxide is a major pollutant that comes from vehicle exhaust and forms nitric acid. a) What is the molar mass of nitrogen dioxide, NO2? Just give answer w/units b) Calculate the number of molecules in a 63.0 µg sample of nitrogen dioxide, NO2. Show work using dimensional analysis and give answer with correct sig.figs. c) How many moles of O atoms are present in a mole of NO2? d) Calculate the number of O atoms in a 63.0 µg sample of nitrogen dioxide. Show work using dimensional analysis and give answer with correct sig.figs.
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Mole = Weight (g) / molar mass (g/mole)

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