The equation for the decomposition of magnesium nitrate is shown. $$\[ 2 \mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{~s}) \rightarrow 2 \mathrm{MgO}(\mathrm{s})+4 \mathrm{NO}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \]$$ Which volume of gas is produced when $$\(0.1\)$$ moles of magnesium nitrate is decomposed completely?
A.
\(1.2 \mathrm{dm}^{3}\)
B.
\( 4.8 \mathrm{dm}^{3}\)
C.
\(6.0 \mathrm{dm}^{3}\)
D.
\(8.4 \mathrm{dm}^{3}\)
Exam No：0620_m20_qp_22 Year：2020 Question No：9
Answer:
C
Knowledge points:
3.3.4. Use the molar gas volume, taken as 24 dm3 at room temperature and pressure, r.t.p., in calculations involving gases
3.3.5. Calculate stoichiometric
Solution:
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