In a 5L container, 1 mol of sulfurous oxide (g) and 1 mol of oxygen (g) are introduced at 727 ° C. If, when equilibrium is reached, sulfuric oxide (g) is obtained and we obtain 0.15 moles of sulfurous oxide. 

Determine:
a) the concentration M in equilibrium of each species. 

b) the Ke value of 54.3. 

c) total grams of sulfuric oxide obtained.