( ( ( The amount ) ( of ( diffused gas ) ) ) ( ( ( varies directly ) ( with ( ( ( ( ( ( area ( of ( diffusion surface ) ) ) , ) ( ( diffusion coefficient ) ( of ( the medium ) ) ) ) , ) and ) ( ( ( the concentration ) ( -LRB- ( ( partial pressure ) -RRB- ) ) ) difference ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (JJ diffused) (NN gas)))) (VP (VBZ varies) (ADVP (RB directly)) (PP (IN with) (NP (NP (NP (NN area)) (PP (IN of) (NP (NN diffusion) (NN surface)))) (, ,) (NP (NP (NN diffusion) (NN coefficient)) (PP (IN of) (NP (DT the) (NN medium)))) (, ,) (CC and) (NP (NP (DT the) (NN concentration)) (PRN (-LRB- -LRB-) (NP (JJ partial) (NN pressure)) (-RRB- -RRB-)) (NP (NN difference)))))) (. .)))
The amount of diffused gas varies directly with area of diffusion surface, diffusion coefficient of the medium, and the concentration (partial pressure) difference.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (DT a) (NN substance)))) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (DT a) (JJR higher) (NN amount)) (PP (IN toward) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJR lower) (NN amount) (NN diffusion)))))))))) (. .)))