During a gravimetric analysis experiment to determine the salt (nacl) content of a chicken soup sample, a precipitate of silver chloride was produced, dried and weighed. the sources of error in the analysis includei) the precipitate was not washed before it was dried. ii) the soup contained some sodium iodide in addition to the sodium chloride. iii) some precipitate remained in the reaction flask after the filtration process. which of these errors could account for a lower than expected mass of silver chloride precipitate?