JEE Main Chemistry question

1.6 moles of is placed in a 4 dm closed vessel. When the temperature is raised to 500 K, it decomposes and at equilibrium 1.2 moles of remains. What is the value for the decomposition of to and at 500 K?

• (A)0.013
• (B)0.050
• (C)0.033Correct
• (D)0.067