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Found 5 results

  1. poweroverwhelming

    Lab Help Needed

    Hi everyone, So I'm doing a lab on the mass relationships between the reaction: 2AL(s) + 3CuCl2 * 2H2O (aq) ---> 3Cu(s) + 2AlCl3(aq) + 2H2O(g) Basically, I found my raw data, which is the mass of beakers with the CuCl2 * 2H2O solution, as well as the beaker mass, and the beaker mass with the solid Copper inside after the reaction has taken place. Now the aim of the lab is to pretty much find the percentage yield however, in my IB Chem HL Guidelines that my school provides, I'm told to create a graph of the processed data. No idea what to show though. I've converted all my masses to moles, so I've got that, but what can I really show on a graph with regards to percentage yield? I can't just copy-paste my data into the graph because I'll have to refer to it in my conclusion so I have to actually come up with something. I've searched all over the internet and I've yet to find anything remotely helpful so I'd really appreciate it if someone did. Cheers.
  2. daniaridha

    Stochiometry Question (PLEASE HELP!)

    I would REALLY appreciate some full explanation for this question. The thermal decomposition of sodium hydrogen carbonate, NaHCo3, results in a 73.8% yield of sodium carbonate, Na2Co3. 2NaHCo3=Na2Co3+H2O+Co2 If a 1.68 g sample of sodium hydrogen carbonate is heated, calculate the mass, in g, of sodium carbonate produced.
  3. daniaridha

    Stochiometry Question (PLEASE HELP!)

    I would REALLY appreciate some full explanation for this question. The thermal decomposition of sodium hydrogen carbonate, NaHCo3, results in a 73.8% yield of sodium carbonate, Na2Co3. 2NaHCo3=Na2Co3+H2O+Co2 If a 1.68 g sample of sodium hydrogen carbonate is heated, calculate the mass, in g, of sodium carbonate produced.
  4. Hi everyone, I would really appreciate some help in solving the following question. I did the process but I wanted to ensure that I achieved the correct answer. Thank you Two aqueous solutions, one containing 5.3 g of sodium carbonate and the other 7.0 g of calcium chloride, are mixed together. A precipitation reaction occurs: Na2CO3+CaCl2=2NaCl+CaCO3 Determine the limiting reagent and the mass, in g, of precipitate formed (theoretical yield).
  5. If you could please help explain the process of how to solve this question, that would be greatly appreciated 1. Butane lighters work by the release and combustion of pressurized butane. 2C4H10+13O2=8CO2+10H2O Determine the limiting reagent in the following reaction. a) 20 molecules of C4H10 and 100 molecules of O2.
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