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- Tc-99m sulfur colloid is to be reconstituted with 75 mCi Tc-99m pertechnetate, to be drawn from an eluate with activity concentration of 325 mCi/mL. You will add constituents totaling 2.5 mL to the kit. What volume of eluate and of normal saline should be added to reach 5 mL final volume?A. Standardlzatlon of thlosulfate solutlon Trial 1 Trial 2 Trial 3 Initial volume of thiosulfate (mL) 0.00 20.05 2.3 Final volume of thiosulfate (mL) 20.05 40.05 22.15 Volume of thiosulfate used (mL) Molarity of thiosulfate Average Molarity of thiosulfate Calculate the molarity of the thiosulfate solution using the formula: 6 mmol S20,²- 1 mmol 10, Ms,0,2- 0.004167 M 10,- 20.00 ml Vol S20,²- used (mL)101 Bb UTF-8"Lab%205-%20PI x Bb UTF-8"Lab%202-%20st Bb UTF-8"Lab%201-%20SCX I https://mssu.yellowdig x Question 4 of 34 If you have 155 mL solution of a 0.762M FeCl solution, how many moles of FeCl, are contained in this sample? mlsetuton ADD FACTOR DELETE ANSWER RESET *( ) 1 1000 162.2 10 35.45 6.60 55.85 0.01 12.6 0.203 100 0.118 0.1 0.001 155 4.92 0.762 19.2 11.8 118
- What's the average concentration of NH3 in the commercial cleaning solution using the data Volume of Cleaning solution 10.00 for all 3 trials, molarity of HCl 0.0530 for all 3 trials, Volume of HCl first trial is 4.8 second trial is 4.4 and third trial is 4.4, Molarity of NH3 in cleaning solution first trial is 0.0254 second trial is 0.0233 and third trial is 0.0233. What's the diluted solution in all 3 trials?A stock solution of approximately 7.7x10^-5 molar will be provided in lab. Determine the volumes of each solution needed to prepare 50.00 mL of standard solutions of concentration 0.600x10^-5molar, 1.20x10^-5molar, 2.40x10^-5molar, and 3.00x10^-5molar. Round the calculated volumes to thenearest 0.1mL.Question 14 of 14 What is the solubility of MGCO3 in a solution that contains 0.050 M Mg2 ions? (Ksp of MgCO: is 3.5 × 10 8) 3.5 x 10 -8 1 8. 9. +/- 0. 68 P Type here to search End 3. 2. 4-
- Molecular weight is an example of an additive property of a compound. O True False When non-volatile solute is combined with a volatile solvent, the vapor above the solution is provided solely by the solvent. O True False ●How do we keep relative supersaturation low by controlling solute concentration? concentration should be constant concentration should be higher concentration should be lower concentration should be fluctuatingStudy Question - 1 How many grams of NaCl should be used in compounding 30 mL of 1% Naphazoline HCI solution isotonic with tears? Freezing point of blood and lachrymal fluid is - 0.52°C • %1 NaCl ATf=0.576 • %1 Naphazoline HCI ATf=0.16 Use the freezing depression method.
- Moving to another question will save HS nestion 3 Determine if the indicated experimental change (on left) would cause an increase, decrease or no change to the solubility of a salt whose AHsolution = -2 O kJ mol-1 A decrease solubility v adding heat Bincrease solubility v surrounding the solution and the beaker with an ice bath Cno change to solubility K Question 3 of 29>> AMoving to anotther question will save this response. PIX 24 4. & 1 2 6. 8 delete Q E R T Y P A S D F G K L enter return shi alt option command command optionIf the same mass of Na2SO4 (MW: 142 g/mol) and K2SO4 (MW: 174 g/mol) were weighed and used for the gravimetry experiment, which will yield a greater amount of precipitate? Assume that the experiment was done correctly. Indeterminate, it will depend on the (A amount of BaCl2 used. Na „SO, , because it has a smaller В molecular weight. They will yield the same amount of precipitate because the same mass was initially weighed. K,SO, , because it has a larger (D molecular weight. 4SKETCHPAD Question 13 The solubility of a gas is 0.890 /L at a pressure of 120 kPa. What is the solubility of the gas if the pressure is changed to 100 kPa, given that the temperature is held constant? Show your work. BLACK NIH Continue All Changes Saved 3 Total Questions Answered 11:21 4/7/2 1Periodic Table. (2)...