DrBob222 : Chemistry HElp...Please Check

posted by .

Sorry its not letting me post the entire thing in the other thread

.000146612 mols KIO3 x (3 mols I2/1 mol KIO3) x (2 mols S2O3^-2/1 mol I2) mols
= .000887972 mols S203^2-

Then M S2O3^-2 = .000887972 mols/0.02715 L.M = 0.032400

Therefore the Molar mass of Na2S2O3 is 0.032400

  • DrBob222 : Chemistry HElp...Please Check -

    You don't mean the molar mass is 0.03240, you mean the molarity is 0.03240. I get the same figures you do. So the solution of Na2S2O3 is 0.03240 M. By the way, I think you are limited to just the one zero as I have it written and not 0.032400. Since the 27.15 mL, 25.00 mL aliquot, 0.1255 g KIO3 all have four significant figures, you can have no more than that in the answer.

  • DrBob222 : Chemistry HElp...Please Check -

    Oh okay that you...and yes i meant molarity

  • DrBob222 : Chemistry HElp...Please Check -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    N2 + 3H2 --> 2NH3 how many grams of hydrogen are needed to react with 50 grams of nitrogen?
  2. Chemistry

    How many milimetres of 0.114 M sulphuric acid solution provide the sulfuric acid required to react with the sodium hydroxide in 32.3 ml of 0.122 M NaOH according to the following equation?
  3. chemistry

    I don't know how to do this How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas?
  4. Belinda's assistance please

    IS THIS CORRECT: 22.5*1MOL O2/6.022*10^23 = .0037 .0037*2=.0074 No, it isn't. Look at the equation. 2H2 + O2 ==> 2H2O. 1 mol O2 produces 2 mols H2O. 2 mols O2 produces what(4)mols H2O. 3 mols O2 produces what(6) mols H2O. 22.5 mol …
  5. chem

    For the reaction 3NO2 + H2O  2HNO3 + NO, how many grams of HNO3 can form when 1.00 g of NO2 and 2.25 g of H2O are allowed to react?
  6. chemistry

    from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O How many molecules of water are produced when 2.25 moles of ammonia are completely reacted?
  7. For DrBob222

    I'm not surprised the answer was wrong. Chemical reactions are by mols and not by grams; therefore, 1 mol of each reactant produces 1 mol of each product but a mol is not a gram. SO, convert 0.5839 g KHC2O4 to mols, convert mols KHC2O4 …
  8. chemistry

    Trial 1 Volume of HCL is 2.51 mL Molarity of the HCL is 0.10 M Mols HCL = L x M = 0.0251 L x 0.10 M = 0.00251 mol/L The equation for the titration is Ca()H)2 + 2HCL --> CaCl2 + 2H2O I will now take 0.5 mols HCl to give mols of OH- …
  9. DrBobb222 : Chemistry HElp...Please Check

    Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately “weighing by difference” about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark …
  10. Organic Chemistry

    You perform a Diels-Alder reaction using 2.0 g butadiene sulfone (MW=118.15 g/mol), 1.2 g maleic anhydride (MW=98.06 g/mol) and 0.8 mL xylenes (MW=318.5 g/mol, density=0.862 g/mL). What is the theoretical yield of the reaction?

More Similar Questions