Calculate the total pressure in a 10.0 L cylinder which contains 0.4 g helium, 1.6 g oxygen and 1.4 g nitrogen at 27 ℃ . {R = 0.082 L amp K -1 mol -1 }

Question

Calculate the total pressure in a 10.0 L cylinder which contains 0.4 g helium, 1.6 g oxygen and 1.4 g nitrogen at 27 ℃ . {R = 0.082 L amp K -1 mol -1 }, 0.492 atm, 49.2 atm, 4.92 atm, 0.0492 atm

MARKS App · Accepted Answer

N u m b e r o f m o l e s o f H e = 0.4 4 = 0.1 N u m b e r o f m o l e s o f o x y g e n = 1.6 32 = 0.05 N u m b e r o f m o l e s o f n i t r o g e n = 1.4 28 = 0.05 T o t a l m o l e s i n t h e 10.0 L c y l i n d e r a t 27 ℃ = 0.1 + 0.05 + 0.05 = 0.2 m o l p T = n R T V = 0.2 × 0.082 × 300 10 = 0.492 a t m

Search any question & find its solution

Looking for more such questions to practice?