1. B

    Chemical Reaction or Mixture?

    Not sure how to begin or steps to take to answer: When combining a known preservative/inhibitor of bacterial growth, with a known antimicrobial agent that is an oxidizer, will a chemical reaction occur or is it simply a mixture? Preservative: Methyl chloro isothiazolinone (C4H4ClNOS) Oxidizer...
  2. V

    help with separating a mixture

    Hi there Ok so I attempted to extract oil from the lavender plant using soxhlet extraction as the college are still waiting on the steam distillation kit arriving. I crushed up the plant and filled the thimble, using n-hexane as the solvent... at this point I seemed to have a little oil mixed...
  3. T

    Formula for correcting ABV (Alcohol by volume)

    Hi, can anyone help me find formula, which would correct ABV, that is measured by alcoholmeter, which is calibrated for 20°C, but the mixture has different temperature? I want to implement this calculation into program so I can not use alcoholometric tables. I know this formula for density of...
  4. L

    Titration Of An HCl And H3PO4 Mixture

    It is desired to determine the content of Ca3 (PO4) 2 in a mineral, 0.505 g and was added 50 mL of 0.05 Ma HCl (excess), which leads all the phosphate to phosphoric acid . The resulting solution is then titrated with NaOH 0.04 Ma requiring 13.66 mL to reach the first equivalence point and 16.28...
  5. L

    Aqueous Mixture

    I am looking for help for a question that says: An aqueous mixture of H2SO4, KMnO4, and H2C2O4: 3H2SO4+2KMnO4+5H2C2O4-> K2SO4 + 2MnSO4 +10CO2 + 8H2O In one experiment, the initial mixture contained 4 moles of H2SO4, 2 moles of KMnO4, and 5 moles of H2C2O4 Approx how many grams of sulphuric acid...
  6. C

    Percent Composition of a Mixture?

    Hello there i'm kinda stuck on a question studying for an exam, i was wondering if anyone would be able to help me. The question is as follows: "Consider a mix of 2 solids BaCl2.2H20 + KCl with a total mass of 1.783g . After heating for 1 hour at 160 degree C , to remove all water and...
  7. A

    how to separate cobalt from a mixture of cobalt and zinc please help

    how to separate cobalt from a mixture of cobalt and zinc please help