An art student needs zinc (II) sulfide, a white pigment, for her final class project.  She synthesizes it using the following reaction: Na2S (aq) + Zn(NO3)2 (s) --> ZnS (s) + 2NaNO3 (g) a) If she reacts 4.0 mL of a 2.5 M solution of Na2S with 7.1 g of Zn(NO3)2, how many grams of zinc (II) sulfide are produced? Please show your work. b) Which reactant is technically in excess in the above reaction? Please explain.

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Q: You mix 25.0 mL of 0.234 M FeC13 with 42.5 mL of 0.453M NaOH. a. What mass of Fe(OH)3 (in grams)…

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Q: 10.00 mL of 5.07 M H2SO4 is pipetted into an Erlenmeyer flask in preparation for a titration. How…

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Q: According to the following reaction what mass is PbCl2 in grams can form from 175 mL of 0.110 M KCl…

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for