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.

Q: Ca(OH)2 (aq) + PO43- (aq) → Ca5OH(PO4)3 (s) + OH- (aq)    A) If 3.00 mL of 0.100 M calcium…

A: Firstly number of moles of both the reactants will be calculated following the identification of…

Q: How many grams of Ag2CrO4 will precipitate if excess K2CrO4 (aq) is added to a 41.5 mL of 0.816M…

A: Ag2NO3 is limiting reactant. and K2CrO4 is given in excess...

Q: Use the following formula for problem 2NaOH (aq) + CuSO4 (aq) --->  Cu(OH)2(s)  + Na2SO4(aq) How…

A: Given : 2NaOH (aq) + CuSO4 (aq) --->  Cu(OH)2(s)  + Na2SO4(aq) Molarity of NaOH solution = 6.0M…

Q: A 59.5 mL sample of a 0.110 MM potassium sulfate solution is mixed with 39.0 mL of a 0.130 M…

A: First note the given balanced equation as shown below, K2SO4(aq)+Pb(C2H3O2)2(aq) →…

Q: Barium (Ba) can be analyzed in solutions by forming BaSO4 (s) precipitate. Ba (2+) + SO4(2-) -->…

A: The amount of Ba2+ ions in the sample of barium compound is unknown and is to be calculated to…

Q: When 0.981 g of Sr is added to water a 0.350 M H2S solution the following reaction occurs: Sr + H2S…

A: Mass of Sr = 0.981 g  Molar mass of Sr = 87.62 g/mol Molarity of H2S = 0.350 M We need to find…

Q: How much 9.00 M HCl (in mL) would be required to decompose the excess Mg present?

A: Step : 1           How much 9.00 M HCl (in mL) would be required to decompose the excess Mg present?

Q: Consider the reaction of 30.0 mL of 0.246 M Bal2 with 20.0 mL of 0.315 M Na3PO4. Since the…

A: This is an oxidation-reduction (redox) reaction:   PV - 3 e- → PVIII (oxidation)   3 NaI + 3 e- → 3…

Q: When copper metal is added to silver nitrate in solution, silver metal and copper (ll) nitrate are…

A: The answer is given as follows

Q: What is the concentration (in Molarity) of a Sulfuric Acid (H₂SO4) solution it a 15.0 mL sample…

A:

Q: Consider the following chemical reaction. 3 Zn(C₂H₂O₂)₂(aq) + 2 Na PO (aq) →→ 6 NaC₂H₂O₂(aq) + Zn…

A: Answer:In this problem, we have to calculate the mass of zinc phosphate by using stoichiometric…

Q: 5.50 mL of H2O and 3.00 mL of an aqueous 0.030 M I solution were added to 13.50 mL of an aqueous…

A: Initial molarity of Fe3+ solution=0.025 M Initial volume of Fe3+ solution=13.50 mL = 0.01350 L…

Q: Let's say you added too much magnesium in the amount of 0.1444 g. How much 5.00 M HCl (in mL) would…

A: Number of moles = Mass/molar mass Molarity = Number of moles of solute/volume of solution (L)…

Q: III) When 25.0 mL of 0.100 M cadmium (II) nitrate and 20.0 mL of 0.150 NazS are mixed a yellow…

A: Volume of Cd(NO3)2 solution (V1) = 25 ml Molarity of Cd(NO3)2 solution (M1) = 0.1 M Volume of Na2S…

Q: Calculate the grams of precipitate formed if you react 35.5 g AgNO3 with 32.3 g of Na2S according to…

A: given that 35.5g of AgNO3  AND 32.3g of Na2S Number of moles of AgNO3 =35.5/169.87=0.21mol…

Q: How many grams of PbBr2 will precipitate when excess NH,Br solution is added to 58.0 mL of 0.734 M…

A: We have to predict mass of lead bromide formed.

Q: Given the reaction below, if 128.5 mL of 0.860  M Al(NO3)3 is reacted with 246.5 mL of 1.15 M NaOH…

A: The balanced reaction taking place is given as, => Al(NO3)3 + 3 NaOH -------> Al(OH)3 + 3…

Q: Which of the following lead (II) compounds would yield the smallest number of lead (II) ions when…

A: Ksp for PbS 3.2 x 10-28 Ksp for PbSO4 = 1.8 * 10-8 Ksp for PbCrO4 = 1 * 10-16

Q: e,f,g,h

A: 22. Given that : The volume of BaI2=30.0 mLMolarity of BaI2=0.235 MThe volume of Na3PO4=20.0…

Q: Predict the products of each precipitation reaction, listing the solid precipitate first, and then…

A: To solve this problem first we have to complete the equation. The chemical reaction formed is a…

Q: If 30.4 g of C₂H₅OH (MM = 46.07 g/mol) are added to a 500.0 mL volumetric flask, and water is added…

A: Molar concentration = Number of moles of solute/Volume of solution (L) Number of moles of solute =…

Q: A solution contains 0.0500 M Ca²+ and 0.0960 M Ag*. If solid Na3PO4 is added to this mixture, which…

A:

Q: A 55.5mL sample of 0.104M potassium sulfate solution is mixed with 35.5mL of a 0.104M lead(II)…

A: Interpretation: From the given information theoretical yield of PbSO4 in grams is to be determined.…

Q: Exactly 450.0 mL of a solution that contained 462.2 ppm of Ba(NO3)2 were mixed with 260.0 mL of a…

A: ppm = mg / LMass of barium nitrate =mole of barium nitrate = mole of Aluminium sulfate = Reaction is…

Q: 1.0 g of aluminum hydroxide reacts with 25.0 mL of 0.500 M carbonic acid according to the following…

A: Limiting reagant are those reactant which have less value of ratio of mol to stoichiometry…

Q: Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs,…

A: We have to write the complete the balanced molecular chemical equation for the reaction below.If no…

Q: A solution contains 0.0430 M Ca2+ and 0.0970 M Ag+. If solid Na3PO4 is added to this mixture, which…

A: The objective of this question is to determine which of the phosphate species would precipitate…

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

A:

Q: Utilizing the molarity equation, calculate the concentration of Potassium Hydrogen Phthalate (KHP)…

A:

Q: Given the precipitation reaction: R Ba(OH), (aq) + K,SO, (a4) ksp - [P] [R] R → BaSO, (s) + 2KOH(aq)…

A: Ksp is the very important parameter to know whether the salt will be precipitated or not .

Q: A 0.4723-g sample of primary-standard-grade Na2CO3 required 34.78 mL of an H2SO4 solution to reach…

A:

Q: Calculate the mass of solid KCl that must be added to 1.87 L of a 0.221 M Pb(NO3)2 solution to…

A:

Q: What mass of Fe(OH)2

A:

Q: When 75.0 mL of a 1.20 M solution of magnesium iodide reacts with 80.0 mL of a 1.50 M solution of…

A: To determine the amount of precipitate formed and the excess reactant, we need to calculate the…

Q: Vinegar contains acetic acid (HC2H3O2), which is responsible for its acidity. In one analysis of a…

A:

Q: Consider the balanced equation of KIKIr eacting with Pb(NO3)2Pb(NOX3)X2  to form a precipitate.…

A:

Q: A 59.0 mLmL sample of a 0.122 MM potassium sulfate solution is mixed with 34.5 mLmL of a 0.130 MM…

A:

Q: molarity

A:

Q: 5.00 mL of 5.09 M Fe(NO3)3 is combined with 1.00 mL of 0.50 M HCIO4 and 4.00 mL of 2.00 x 10-M KSCN.…

A: Given: Vol of  Fe(NO3)3 = 5.00ml Concentration [Fe(NO3)3 ] = 5.09M Vol of HClO4 = 1.00ml…

Q: What mass of Fe(OH)3 will be obtained when 100. mL of 0.240 M FeClz is mixed with 200. mL of 0.182 M…

A:

Q: How many grams of Ag2CO3 will precipitate when excess (NH4)2CO3 solution is added to 55.0 mL of…

A:

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