2NaN3=2Na+3N2. If 0.21 moles of NaN3 reacts, what mass of nitrogen would result

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04-02-2017
Chemistry

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2NaN3=2Na+3N2. If 0.21 moles of NaN3 reacts, what mass of nitrogen would result

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DoctorCass DoctorCass · Answer 1 · 2017-02-04T20:21:20+01:00

DoctorCass DoctorCass

04-02-2017

Use the mole ratio: 2 moles of NaN3 : 3 moles of N2
you have : 0.21 moles of NaN3 : x moles N2
Cross multiply: you get 0.3 moles for N2
To find the mass= # of moles * molecular mass
0.3 * 28
= 8.4g

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