The numerical value for the Keq of the N2O4 ⇔ 2NO2 is 10 M
calculation
Keq = ( concentration NO)^2/ ( concentration of N2O4)
Keq= (0.5 )^2/0.025 = 10 M
The power of NO2 is taken as 2 as value 2 is is the one in front of No2 in equilibrium equation
<span>Solving for the percent composition by mass of sulfur. The formula would be:
%S = mass of sulfur / mass of compound x 100%
Plugging in our data:
%S = 32 amu / 120 amu x 100%
%S = 0.266666 x 100%
%S = 26.66%
Rounded off to two significant numbers it will be 27%. Therefore the answer is number 2.</span>
Abca I think it’s right not sure
The answer to this would be b ,