Calculate initial concentrations added to the test tube, the dilution factor must be taken into consideration (C1V1=C2V2). This is the reaction in the test tube Fe+3 (aq) + SCN-1(aq) -><- FeSCN+2(aq) + heat. In test tube 1 there is 5 mL of 0.002 M Fe(NO3)3 , 2 mL of 0.002M KSCN(mL), and 3 mL of H2O. I need to find the initial concentration of Fe+3 and SCN-1, how would I go about doing it while including the dilution factor?

Sodium nitrate contains 0.3% iodine in the form of calcium iodate, Ca(IO3)2. After the sodium nitrate in the niter is dissolved and recrystallized, the remaining solution contains 9 g/Lsodium iodate, NaIO3(aq). The NaIO3 is converted to iodine when it reactswith sulfur dioxide and water.2NaIO3 + 5SO2 + 4H2O → Na2SO4 + 4H2SO4 + I2a. How many liters of sodium iodate solution that contains 9 g of NaIO3 perliter would be necessary to form 127.23 kg of iodine, I2?

4. In a gravimetric determination of sulfur as BaSO4, 0.8863 g of the ignited precipitate is found to contain 7.71 mg of coprecipitated Na,SO4. Calculate the percentage error of the determination resulting from the presence of the Na,SO4-

Analysis shows the 15.0 L of seawater simulant contains a mercury (II) ion concentration of 3 X 10-4 M.  1.494 grams of potassium iodide will be needed to add to the icefish tank to precipitate out all of the mercury (II) ions. The reaction of mercury (II) ions and potassium iodide is shown below:Hg22+(aq) + 2KI (s) Hg2I2(s) + 2K+(aq) What is the concentration of K+ions (in M) in the crocodile icefish tank after precipitating out all the mercury (II) ions?

can you please answer the chem questions on the image attached below?  i have included another picture for the choices available for first one thank you so very much

Match the reaction patterns with the reaction types D. AB+CDAD + BC A+ BC ABC WXYZ → WX+Y+Z P + QR → Q + PR ✦ 2 A+ (aq) + Z²- (aq) → A2Z (s) A. Net ionic equation B. Decomposition C. Combination D. Double replacement E. Single replacement

(ii) H3CO H 1. excess CH3OH, [H+] 2. LDA, THF 3. H3C- 4. LiAlH4 5. H* workup 6. H3O+ e

In 'Synthesis of an Iron Complex Salt', hydrogen peroxide (H202) is added to the solution and heat is applied until boiling. A side reaction is the formation of rust brown precipitate, which consists of potassium permanganate (KMN04) ferrous ammonium sulfate, Fe(NH4)2(SO4)2-6H20] iron (III) hydroxide, Fe(OH)3 Iron (II) oxalate (FeC204)

2. A chemistry student is doing a titration lab in D314 and needs to make up 2 liters of NaOH for the class and standardize the NaOH with the organic acid KHP (MW 204.2 g/mol). The instructions say 5 grams/ liter of NaOH pellets which is - 0.1 M by the molar mass of NaOH. The student weighs out 10 grams of NaOH and dissolves it in 2 liters of water. The student then weighs out 0.4120 g of KHP and puts the organic acid in 50 mL of water and adds ~ 3 drops of 1% phenolphthalein indicator. To reach the endpoint (pink) where moles KHP are used up with NaOH, he adds 17.5 mL of the NaOH from the buret. What is the concentration of the NaOH? If he repeats this 2 more times an adds 16.9 mL and 18.2 mL what is the average concentration of the NaOH and the % difference? K

Please use dimensional analysis