( ( ( A ( zero-order ( rate law ) ) ) ( for ( a ( chemical reaction ) ) ) ) ( ( means ( that ( ( ( the rate ) ( of ( the reaction ) ) ) ( is ( independent ( of ( ( the concentration ) ( of ( any reactant ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ zero-order) (NN rate) (NN law)) (PP (IN for) (NP (DT a) (NN chemical) (NN reaction)))) (VP (VBZ means) (SBAR (IN that) (S (NP (NP (DT the) (NN rate)) (PP (IN of) (NP (DT the) (NN reaction)))) (VP (VBZ is) (ADJP (JJ independent) (PP (IN of) (NP (NP (DT the) (NN concentration)) (PP (IN of) (NP (DT any) (NN reactant)))))))))) (. .)))
A zero-order rate law for a chemical reaction means that the rate of the reaction is independent of the concentration of any reactant.
(ROOT (S (NP (PRP You)) (VP (VBP see) (NP (DT a) (JJR faster) (NN reaction) (NN rate)) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NN concentration)) (PP (IN of) (NP (NNS reactants)))) (VP (VBZ is) (ADJP (JJR higher)))))) (. .)))