Chemistry

posted by .

compute volume and/ or weights of reagents to make the following solution.

Desired concentration: 40% NaOH + 4% Na2S2O3
Desired quantity: 1500 mL
Given: 90% w/w NaOH, pure Na2S2O3

I'm not sure how to do this so any help would be great. Thanks!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    compute volume and/ or weights of reagents to make the following solution. Desired concentration: 40% NaOH + 4% Na2S2O3 Desired quantity: 1500 mL Given: 90% w/w NaOH, pure Na2S2O3 I'm not sure how to do this so any help would be great. …
  2. Chemistry

    compute volume and/ or weights of reagents to make the following solution. Desired concentration: 22 ug/mL bovine serum albumin Desired quantity: 100 mL Given: 95% bovine serum albumin I'm not sure how to do this so any help would …
  3. CHemistry Please Help..............LAB

    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 …
  4. Chemistry*

    The following equation is given: S2O3 -2 + 2H +1 ---> S + SO2 + H2O [HCl] = 2 mol/L [Na2S2O3]= 0.3 mol/L what is the concentration (mol/L) of H+ if you were to add: a) 20 mL of HCL with 5 mL Na2S2O3 & with 5 mL H2O b) 15 mL of HCl …
  5. science

    the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved …
  6. science

    the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved …
  7. Chemistry

    A certain classification test calls for 5 mL of 1.2 M NaOH. The only concentration of NaOH solution available is 3.0 M. Describe how you would make the quantity that you need of the 1.2 M NaOH solution.
  8. Chemistry

    You are asked to prepare 500. mL of a 0.150 M acetate buffer at pH 5.00 using only pure acetic acid, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add acetic acid …
  9. chemistry

    Sodium thiosulfate, Na2S2O3, is used as a fixer in photographic film developing. The amount of Na2S2O3 in a solution can be determined by a titration with iodine, I2, according to the equation: 2Na2S2O3(aq) + I2(aq) --> Na2S4O6 …
  10. chemistry

    10.0 mL of a Cu2+ solution of unknown concentration was placed in a 250 mL Erlenmeyer flask. An excess of KI solution was added. Indicator was added and the solution was diluted with H2O to a total volume of 75 mL. The solution was …

More Similar Questions