( ( ( ( Multiplying ( ( the ( molar volume ) ) ( of ( ( thiosulfate solution ) ( used ( by ( its concentration ) ) ) ) ) ) ) gives ) ( ( ( the number ) ( of ( thiosulfate ions ) ) ) ( that ( were consumed ) ) ) ) . )
(ROOT (SINV (VP (VBG Multiplying) (NP (NP (DT the) (NN molar) (NN volume)) (PP (IN of) (NP (NP (JJ thiosulfate) (NN solution)) (VP (VBN used) (PP (IN by) (NP (PRP$ its) (NN concentration)))))))) (VP (VBZ gives)) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (JJ thiosulfate) (NNS ions))) (SBAR (WHNP (WDT that)) (S (VP (VBD were) (VP (VBN consumed)))))) (. .)))
Multiplying the molar volume of thiosulfate solution used by its concentration gives the number of thiosulfate ions that were consumed.
(ROOT (S (NP (NP (DT The) (NN number)) (PP (IN of) (NP (NP (NNS particles)) (PP (IN of) (NP (NP (DT a) (NN substance)) (PP (IN in) (NP (DT a) (VBN given) (NN volume)))))))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (DT the) (NN concentration))))) (. .)))