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rachie19

  • one year ago

help balance this equation for stoivhiometry. Na2 So4 + BaCl2---->> NaCl+BaSO4

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  1. Photon336
    • one year ago
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    @rachie19 let me ask you something, is this the first time you have to do this? what is confusing

  2. rachie19
    • one year ago
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    i want to know if i id it right . i got BaSo4+2NaCl. and i havent actua;;y learned it yet its for a prelab.

  3. rachie19
    • one year ago
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    @Photon336

  4. Photon336
    • one year ago
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    TO balance a chemical reaction though it takes practice, but the first thing you need to do is to identify and make a chart like this: |dw:1443632818209:dw| identify each atom type in the reactants and write them down do the same thing for the products. after you do that write the number of atoms for each type in the reactants and products. when you do that if the number of atoms of each element on the reactants and products do not equal each other your equation is not balanced could you do that and then tell me what you get?

  5. Photon336
    • one year ago
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    @rachie19 ?

  6. rachie19
    • one year ago
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    |dw:1443632948411:dw|

  7. Photon336
    • one year ago
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    nice work, now from this it's pretty straightforward afterwards you can easily tell whether this is balanced or not @rachie19

  8. rachie19
    • one year ago
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    so 2NaCl 2S Ba O4

  9. rachie19
    • one year ago
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    i meant 2SO4

  10. Photon336
    • one year ago
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    so yeah if you do this method it's an easy way to see whether your reaction isn't balanced or not almost so yeah you're right we need to put a 2 in front of NaCl to give us 2 atoms of Na and 2 atoms of Cl but you missed one thing. |dw:1443633584339:dw| after we do this we need to look at the whole reaction

  11. Photon336
    • one year ago
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    so @rachie19 you were right we need to put 2 in front of NaCl but what about SO4, what do you notice, and do we need to really balance that?

  12. rachie19
    • one year ago
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    oh ok i saw my mistake. and no because they have the same amount right?

  13. Photon336
    • one year ago
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    exactly

  14. Photon336
    • one year ago
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    now checking your answer is easy

  15. Photon336
    • one year ago
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    you can go back to the chart you made and see if all the atoms are the same amount so if you like you can copy your previous drawing and tell me what the final answer is?

  16. rachie19
    • one year ago
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    i got 2NaCl2BaSo4

  17. Photon336
    • one year ago
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    Is this what you got? @rachie19 \[Na_{2}SO_{4} + BaCl_{2} --> 2NaCl + BaSO_{4}\]

  18. rachie19
    • one year ago
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    YES

  19. Photon336
    • one year ago
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    excellent, I suggest using that method for one reason. you'll be able to easily see whether the reaction isn't balanced or not. but make sure you list al of the reactants and products in the chart.

  20. rachie19
    • one year ago
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    Ok thank u so much for your help because i haven't actually learned it yet so this is a headstart.Thanks again

  21. rachie19
    • one year ago
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    @photon336 can u help me find the stoichiometric ratio between BaCl2 and NaCl ? I got 2:1 but I'm not quite sure how if I did it the right way

  22. Photon336
    • one year ago
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    @rachie19 Bacl2 we have 1 mole of that; while NaCl2 we have 2 moleS. The ratio of BaCl2/NACL2 would be 1:2

  23. rachie19
    • one year ago
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    thank u =)

  24. rachie19
    • one year ago
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    @Photon336 i need help with one more thing for this stoichiometry lab. lol and im promise im done.So i did a lab today and i have to find the theoretical yield of copper i know how to find the theoretical yield im just a little confused here is are my results for the lab Mass of Mg used: 0.301 Moles of Mg used:1.248 *10^-2 Mass of Copper produced:.118 grams Moles of Copper produced:1.85 *10^-3 Mg/copper mole ratio: 7:1 Correct equation: Mg(s)+CuSO4---> MgSO4 +Cu all I am missing is the theoretical, actual and percent yeild. I need some guidance Please =)

  25. rachie19
    • one year ago
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    mass of copper produced is .118g btw

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