Laead nitrate can be decomposed by heating. what is the percent yiled of the decomposed reaction is 9.9g pb (no3) 2 is heated to give 5.5 g pbo

2Pb (NO₃) ₂ → 2PbO + 4NO₂ + O₂

m (Pb (NO₃) ₂) = 9.9 g

m' (PbO) = 5.5 g

the theoretical mass of lead oxide is:

m (PbO) = M (PbO) * m (Pb (NO₃) ₂) / M (Pb (NO₃) ₂)

the percent yiled of lead oxides is:

w=m' (PbO) / m (PbO) = m' (PbO) M (Pb (NO₃) ₂) / M (PbO) * m (Pb (NO₃) ₂)

w=5.5*331.2 / (223.2*9.9) = 0.824 (82.4%)