Nitrosyl bromide decomposes according to the following equation.

Question

2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g)
A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium
the flask contained 0.46 mol of NOBr. How many moles of NO and Br2, respectively, are in the
flask at equilibrium?
A) 0.18, 0.18 B) 0.18, 0.090 C) 0.46, 0.46 D) 0.46, 0.23 E) 0.18, 0.360

i thought it was .18 .18 but i was wrong. how is this problem solved/

Answer 1

0.6 and 0.2 respectively