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- we dissdve 350ml volumetric Flask.LWe call this sdlution (S) oa of hydrated cupric sulfate (cusoy.5H,0 in given.molar mass launol ). Cu:64 S-32 H+ 1 1. Write the equation of dirsociation of hydrated cupric sulfate in water. 12. Calculate the molar mass of hydrated cupric sulfate. 1.3. Determine the molar concentration of (S). 14. Deduce it's mass concentiation. 1.5.1ist te materials used. 16. Write the procedure of preparting (5).> EL session.masteringchemistry.com MasteringChemistry ROSTER-2019-SPRI-PULLM-CHEM-101 blackboard wsu Google Search MasteringChemistry: HW 8 KHW 8 Applications for Dilution Calculations K8 of8 Dilution as a procedure in analysis We sometimes purposely dilute solutions if the analyte concentrations wavelengths in the visible (and sometimes uitraviolet) range. Based on the dissolved solute's properties, we can quantify that solute's concentration are too high to permit an accurate measurement. For example, a spectrophotometer can measure the amount of light that passes through a sample solution for If the solute's concentration is too high, a relatively small amount of incident light having the wavelength that corresponds to the solute's absorption behavior will less light is absorbed, and the detector in the spectrophotometer can generate more reliable data. reach the dete ctor, which results in an inaccurate measurement (consider the result if you blocked the light with an opaque…solute Which is the better solvent? H,0 H NH,NO, H H H. CH;(CH,),OI NaCl CH,OH H,0 KCI Su Continue © 2022 McGraw Hill LLC. AIl Rights Reserved. Terms of Use| Privacy C II
- M req M #3 80 E D Solid barium chloride is slowly added to 75.0 mL of a 0.205 M sodium carbonate solution until the concentration of barium ion is 0.0440 M. The percent of carbonate ion remaining in solution is %. Submit Answer C $ 4 000 888 R F % 5 V [References Use the References to access important values if needed for this question. Retry Entire Group T Cengage Learning | Cengage Technical Support G 6 6 more group attempts remaining MacBook Pro B Y H & 7 U N 11 * +00 8 J 1 M ( - 9 K O ) 0 I 2 L P command Previous Email Instructor { + 11 [ Next Save and Exit 27 option ? 1 ] deleWhat is the mole fraction, X, of solute and the molality, m (or b), for an aqueous solution that is 19.0% NaOH by mass? df X = m= .47503 Incorrect 2.50 x10-5 Incorrect psy HW 3.pdf APA Title Page -....doc ^ DPSY Final Project....pdf m SI (lec) (CHEM-1305-7Z3), Topic: Unit 6:. w McGraw-Hill Education Campus ork i Saved c. Ex. 6- Molarity - calculate from mole and volume (mL) values (Pool Calculate the molarity, M, of KCl when 2.65 g KCl are dissolved in 2.50 × 10´ mL of solution. Enter your answer in scientific notation. Be sure to answer all parts. x 10 (select) E M KCI < Prev 4 of 11 Next MAR tv
- A solution of HCl was titrated against sodium carbonate. What is the average normality of acid in the given data? (MW Na₂CO3 = 106) T2 0.3479 0.3562 0.3042 Weight (g) Initial V (ml) 0.80 1.60 35.20 36.70 39.80 Final V (mL) Vol HCl used (mL) 35.10 39.40 N of HCl (eq/L) 0.1954 0.1870 Average N of HCl (eq/L)Example: What is the volume of HCl which is needed to prepare 100 ml of solution has 6 M conc. if you know the % of HCl equal 37 % sp.g was 1.18 g /ml. M=2%- 1000 M.wt. 1000 11.96 36.5 M,V M;V: - 6. 100 - 11.96. V: The volume will dilute to 100 mlO e) % KBr = % 66.2 , % KCI = % 33.8 %3D The solubility product (Ksp) for 4 points Pb(OH)2 (s) is 2.5 x 10-16. What would be the quantity of solubility by g/L of Pb(OH)2 which has Mwt =241.2 g/mole)? O 9.947 x 10-4 O 5.975 x 10-4 O 7.596 x 10-5 O 9.575 x 10-4 O 9.723 x 10-4 Calculate [H+], PH and POH 4 points
- Ksp = 1.6 x 10-4⁹ for Ag2S at 25 °C, what is the molar concentration of Ag* at 25 °C? M (example: type in 3.4E-5 for 3.4x10-5). Please pay attention to the number of sig. figs. in your answer. The molar concentration of S²- is M.To /bbhosted.cuny.edu/webapps/assessment/take/launch.jsp?course_assessment_id%3_2032634_1&course_ id= 201483.. Remaining Time: 1 hour, 09 minutes, 31 seconds. * Question Completion Status: A student makes a solution by dissolving 25.4 g of NaOH into 450 g of water. What is the mass percent (m/m) concentration of this solution? QUESTION 4 13.9 g Sodium sulfate (Na2SO4) has a solubility of in water at 20 °C. Which of the following mixtures will yield 100 mL a saturated solution at this temperature?. O 0.50 g of Na,SO4 in 1.0 mL of water O 125 g of NazSO4 in 1.0 L of water O 0.50 g NazSO, in 100 mL of water O 4.3 g Na,sO, in 100 mL of water O 17 g of Nazs04 in 0.500 L of water Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers re to search 50°F Mostly sunn DELL DII home prt sc F10 F1 end inse F3 FS F9 F12 %23 %24 3 4. 5 7 8. Y D R E5 → C W2 Discussion X esc KW6 Discussion Question 1: MyMastering Chapter 9 Homework Problem 9.38 Enhanced with Feedback M session.masteringchemistry.com/myct/itemView?assignment ProblemID=190556693 Calculate the mass/volume percent, % (m/v), for the solute in each of the following solutions. MasteringChem X F1 Q 5506 W F2 AIRI 2 7080 2 # 20 3 F3 E $ 4 00 00 00 Part A R 4.80 g of LiCl in 51.5 mL of LiCl solution Express your answer using three significant figures. F4 VE ΑΣΦ Submit Part B 7.0 g of casein in 140 mL of low-fat milk Express your answer using two significant figures. Request Answer IV|| ΑΣΦ Submit % 5 Request Answer F5 T C << tv F6 TAMANHERS MacBook Air Y & ? SA 7 % % F7 U O * 00 8 F8
