If a given power plant released so2 gas with a volume v of 1200 m3 at a density ρ of 2.86 kg/m3 at standard pressure and temperature, how many moles n of so2 are released?

Assume ideal gas behavior for simplicity so we can use this equation:

PV = nRT
Standard pressure is 101325 Pa
Standard temperature is 273 K
R is 8.314J/mol-K

Solving for n,
n = PV/RT
n = (101325 Pa)(1200 m³)/(8.314J/mol-K)( 273 K)
n = 53,570.44 mol

Talc (french chalk) is the ingredient