2) You are tasked with determining the barium content of a samplecontaining barium nitrate mixed with rubidium nitrate. The sample isweighed, dissolved into 50.0mg water, and treated with xs 0.500Msodium sulfate. The acid fully ionizes in this experiment. A whiteprecipitate forms which is washed, filtered, and weighed multipletimes, according to the data given below:Mass of sample0.425gMass of thoroughly dried filter paper1.462gMass of precipitate+filter after 1st drying1.755gMass of precipitate+filter after 2nd drying1.699gMass of precipitate+filter after 3rd drying1.698g C] In the filtrate solution, is [Na'] less than, equal to, or greater thanthe [NO,] level? Justify your answer.

Observing the given information, it is clear that excess amount of 0.500M sodium sulfate is added.

Answered: 2) You are tasked with determining the…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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sentences. 3. Virtual Lab Questions a. A student prepares a solution of hydrochloric acid that is approximately 0.1 M and wishes to determine its exact concentration. A 25.00 mL portion of the HCI solution is transferred to a flask, and after a few drops of indicator are added, the HCI solution is titrated with 0.07575 M NaOH solution. The titration requires exactly 38.92 mL of the standard NaOH solution to reach the end point. What is the molarity of the HCI solution? b. It takes 46.22 mL of a 1.021 M NaOH solution to neutralize a solution of 4.4567 g of an unknown monoprotic acid in 80.00 mL of water. Calculate the molecular weight of the acid. 4(D) 5
49. [Algoríthmíc] A 3.00-g sample of an alloy (containing only Pb and Sn) was dissolved in nitric acid (HNO,). Sulfuric acid was added to this solution, which precipitated 2.93 g of PBSO4. Assuming that all of the lead was precipitated, what is the percentage of Sn in the sample? (molar mass of PbSO = 303.3 g/mol) a) 33.3% Sn b) 17.7% Sn c) 50.0% Sn d) 66.7% Sn e) 2.00% Sn ANS: a) SECTION: 4.7 LEVEL: hard 80 © Houghton Mifflin Company. All rights reserved.
A sample of 3.0600 grams contains a mixture of sodium carbonate and calcium carbonate. This sample was dissolved with 92.81 mL hydrochloric acid, heated to completely remove the reaction gases. After cooling to room temperature, this solution is put in a volumetric flask and diluted to a volume exactly 100.00 mL. This solution is acidic. a. Write down the equation for the ionic reaction in the process of dissolving the sample of the carbonate mixture. The excess acid in the dissolving process is neutralized by alkaline, how: 10.00 mL of the mixed solution is titrated with 0.1072 M sodium hydroxide solution and 37.31 mL is needed to neutralize it properly. b. Write down the equation for this neutralizing reaction. The titrated solution is reacted with an excess of ammonium oxalate, (NH4) 2C2O4, to separate the calcium ions. The resulting precipitate was filtered, washed and dried and then weighed as much as 0.2560 g. c. Write down the equation for the reaction in this calcium separation…
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[Review Topics] [References] Use the References to access important values if needed for this question. A 7.26 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 27.2 mL of 0.319 M sodium hydroxide are required to neutralize the hydroiodic acid, what is the percent by mass of hydroiodic acid in the mixture? % by mass Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next 8:46 PM a 1>梦四后中) 12/6/2020
Enter your answer in the provided box. A sample of 0.7960 g of an unknown compound containing barium ions (Ba) is dissolved in water and treated with an excess of Na,SO,. If the mass of the BASO, precipitate formed is 0.8801 g, what is the percent by mass of Ba in the original unknown compound?
need help with 9 and 10
Ff.128.
Write the formulas of the reactants and products - including the symbols for the state - (s), (l), (g), (aq) - then balance the equations. Use the WIRIS editor to appropriately represent formulas and symbols.

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