So, guys, the question is an MCQ. Something todo with moles, i'm not sure. here it is:
The equation for decompositon of magnesium nitrate is shown:
2Mg(NO3)2(s) = 2MgO(s) + 4NO2(g) + O2(g)
Which volume of gas is produced when 0.1 moles of magnesium nitrate is decomposed completely?
A. 1.2dm^3
B. 4.8dm^3
C. 6.0dm^3
D. 8.4dm^3