SBEC Chemistry and Physics

16 Responses to “Hon Chemistry 4-3-09 Intro to Stoichiometry”

1.   Tim Morris Says:
   April 6th, 2009 at 11:12 AM

   Hey, I don’t understand what the question on the homework meant when it said where do you find mole ratios, what does that mean?

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   Nicole Crawford Reply:
   April 6th, 2009 at 5:56 PM

   mole ratios come from the coefficients of a balanced chemical equation.

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2.   Nicole Crawford Says:
   April 6th, 2009 at 5:57 PM

   did that help tim?

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3.   Rachel-Chloe Gibbs Says:
   April 6th, 2009 at 6:42 PM

   On tonight’s homework, we only do the (a) part of problems with more than one part right? (except on 14 just do (a) and (b), not (c)?)

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4.   Olivia Williams Says:
   April 6th, 2009 at 7:23 PM

   Rachel-Chloe: yep, that’s right. i think it’s #9-12 and 14-17.

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5.   Tim Morris Says:
   April 7th, 2009 at 6:41 AM

   Hey Nicole, that helped alot, thank you very much

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6.   Tanya Says:
   April 7th, 2009 at 9:26 AM

   What homework do we have tonight??

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7.   Jordan Tupper Says:
   April 8th, 2009 at 6:05 AM

   what are the steps you use to find the limiting reactant?

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8.   J.T. Says:
   April 8th, 2009 at 10:26 AM

   how do you find the excess reatant

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9.   TLR Says:
   April 8th, 2009 at 11:25 AM

   Once you’ve for the limiting rteactant how do you use it to work the rest of the problem??

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10.   Jalen Gipson Says:
    April 9th, 2009 at 2:09 PM

    Would you ever use the Q-formula for mass ratio?

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11.   trey skinner Says:
    April 9th, 2009 at 2:11 PM

    What is composition stoichiometry?

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12.   Britteny hudson Says:
    April 9th, 2009 at 4:55 PM

    Trey, composition stoichiometry deals with the mass relationships of elements in compounds.

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13.   Molly McCarter Says:
    April 9th, 2009 at 5:15 PM

    what are the two types of stoichiometry?

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14.   John Bailey Cox Says:
    April 10th, 2009 at 6:05 PM

    Jalen. You dont have to, but she says if you scratch it out, even if your ratio is wrong, you’ll get some credit for showing how you got your ratio.

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15.   Rachel Laster Says:
    April 10th, 2009 at 7:59 PM

    Tyler- It depends on what the problem is asking for. If it is only asking for the limiting reactant, then you don’t have to do anything else.

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