Q5/ Calculate the concentration of sodium ion in grams per liter after mixing 150mlL of 0.200 M NaCl and 250ml of 0.250 M Na,504. (20M) Atom weight = Na - 22.9897, Cl = 35.453, O= 16 H-1S= 32.065, Ca= 40.078 Ba = 137.327, C 12.0107, N= 14.0067
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- 6-40 What is the molarity of each solution? (a) 47 g of KCI dissolved in enough water to give 375 mL of solution (b) 82.6 g of sucrose, C12H22O11, dissolved in enough water to give 725 mL of solution (c) 9.3 g of ammonium sulfate, (NH4)2SO4 dissolved in enough water to give 2.35 L of solutionنقطتان )2( Sea water contains an average of 1.08 x103ppm of Na+ Calculate the * pNa sea water. (Na= 23) 1.10 1.11 O 1.12 O 1.13 1.14 O (2) jlibäi What is the mass in grams of solute in 4500 ml of a solution that contains 33.4 ppm of SnCl2? * (Sn=118 , Cl=35.5) 0.013 0.014 O 0.015 0.016 0.017 O نقطة واحدة Fill in the blanks .is the Nuantitativn rolotionchinamon theBeaker 0.00200 M Fe(NO3)3, mL 0.00200 M NaSCN, mL total volume, mL 1 3.000 2.000 10.00 2 3.000 3.000 10.00 3 3.000 4.000 10.00 4 3.000 5.000 10.00 5 (blank) 3.000 0.000 10.00 In Solutions 1-4 you are adding successively larger volumes of 0.00200M SCN- to the Fe3+ solution and diluting to 10.00 ml. Calculate the final diluted molarity of SCN- in solution #1 Your answer should have 3 sig figs =
- Beaker 0.00200 M Fe(NO3)3, mL 0.00200 M NaSCN, mL total volume, mL 1 3.000 2.000 10.00 2 3.000 3.000 10.00 3 3.000 4.000 10.00 4 3.000 5.000 10.00 5 (blank) 3.000 0.000 10.00 In solutions 1-4 you are adding 3.00ml of 0.00200M Fe3+ to some SCN- solution and dilutiing to a final volume of 10.00ml. What is the new concentration of the Fe3+ due to dilution? Your answer should have 3 sig figs.A student creates a calibration plot for serial dilutions of Cu(NO3)2. A graph of concentration in M (x-axis) versus absorbance (y-axis) gives a linear trendline of y = 0.345x - 0.11. c.) How many grams of Cu(NO3)2 are present in 100 grams of solution? How many grams of water?Calculate the molarity of a solution that contains 324 grams of KNO3 (molar mass of KNO3 =86 g/mole) in 2.00 liters of solution. Must show calculation setup. T TTT Paragraph v Arial v 3 (12pt) E- T 只i是 O fr Mashups - 曲田国 田图□I HTML CSS
- Solubility Curves of Selected Compounds 150 140 130 120 110 100 NANO 90 8아 70 60 NHC 50 40 Naci 30 20 KCIÓ 10 Cez(SO 0. 10 20 30 40 50 60 70 80 90 100 Temperature (c) The solubility of ammonium chloride at 70 °C is O 34 g/100 g water O 39 g /100 g water O 47 g/ 100 g water O 60 g/100 g water 1 2 4 5. 6 DELL Grams of solute CONNFO < STARTING AMOUNT Type here to search 1 N W X JL S F3 X 3 32 11 C What quantity of moles of glucose (C6H12O6) in 0.500 solution? ADD FACTOR 0.500 O 1.20 x 10²⁹ 100 F5 0.400 R mol glucose C % 5 0.020 F6 36.03 T 意回 FR g glucose Time's Up! 6.022 x 10²3 1 B 99+ 11 mL DELL H D 225 7 ANSWER 3 N 180.18 7.53 x 10²3 L of a 0.400 M L 1.25 M glucose F10 M RESET 2.08 x 10-24 K 5 0.200 F11 57°F Cloudy PriSer Curt laQ3/ A) 0.63 g of a sample containing Na,CO3, NaHCO, and inert impurities is titrated with 0.2 M HCI, requiring 17.2 mL to reach the phenolphthalein end point and a total of 43.5 mL to reach the modified methyl orange end point, How many grams NazCO3 and NaHCO, are in the mixture?
- 2 Analytical Chemi... -> Analytical Chemistry Problems Q1/ What is the weight, in milligrams, of 0.250 mmol Fe2O3 (ferric oxide), F.wt (159.7 mg/mmol)? Q2/ A solution is prepared by dissolving 1.26 g AGNO3 in a 250-mL volumetric flask and diluting to volume. Calculate the molarity of the silver nitrate solution. How many millimoles AGNO3 were dissolved? F.wt AGNO3 169.9 g/mol Q3/ How many grams per milliliter of NaCl are contained in a 0.250 M solution? F.wt NaCI 58.4 mg/mmol Q4/ Calculate the concentration of potassium ion in grams per liter after mixing 100mL of 0.250 M KCI and 200mL of 0.100 M K2SO4. (atomic weight K 39.1 mg/mmol) Q5/ How many milliliters of concentrated sulfuric acid, 94.0%, density 1.831 g/cm3, are required to prepare 1 liter of a 0.100 M solution? F.wt H2SO4 98.1 g/mol Q6/ You wish to prepare 500mL of a 0.100 M K2Cr2O7 solution from a 0.250 M solution. What volume of the 0.250 M solution must be diluted to 500 mL? Q7/ The concentration of zinc ion in blood serum…We can measure the concentration of HCl solution by reaction with pure sodium carbonate:Complete reaction with 0.9674 ± 0.0009 g of Na2CO3 (FM 105.9884 ± 0.0007) required 27.35 ± 0.04mL of HCl. Find the molarity of the HCl and its relative and absolute uncertainties. Report themolarity to the correct number of digits. What is the major source of uncertainty in the molarity?(A=)=0.0025 mL = 110 x 10-4 X² (0.025 +0.0258) = 0.0492 = 14 +Tog LOH]- 1.4 x 10-4 0-0492 = 14-523 = 8.27 = 7-14×10" = x², 00492 3. If 50.00 mL of 1.00 M HC₂H₂O₂ (K = 1.8 x 105) is titrated with 1.00 M NaOH. What is the pH of the solution after the following volumes of NaOH have been added? a) 0.00 mL b) 25.00 mL c) 49.90 mL d) 50.10 mL