Recent content by markelmarcel

  1. M

    Chem I: Determining Acidic, Basic or Neutral Salt

    See... I don't understand how this works. Haha. I got one at least! My prof went through all this a little too fast for me. Any online resources to help me better understand this? (I like to be active with learning, not a whiner who just wants the answers)
  2. M

    Chemistry: Prediction of producs

    Ok I'm still working on balancing but for the second I'm assuming the insoluble salt has to be Sr3(PO4)2 Because PO4 is insoluble, as is Sr (with it being a group II cation).
  3. M

    Chem I: Determining Acidic, Basic or Neutral Salt

    Homework Statement Predict if the following salts are acidic, basic, neutral or undetermined. Homework Equations a. NaOCl b. NH4I c. Sr(ClO3)2 d. KCN The Attempt at a Solution A. NaClO = Na+ and ClO- So, if Na+ gives up a proton, that would turn it into Na... and...
  4. M

    Chemistry: Prediction of producs

    Ok so for the first one I got... NaNO3 + 3(NH4)2SO4 + 2Fe(CH3CO2)3 \rightarrow Fe2(SO4)3 [/SUB](s) + 6NH4CH3CO2 When I looked up what I had for my solubility rules I found Na3PO4, RbClO3 and Sr(NO3)[SUB]2 to all be soluble... So where do I go from here? Randomly place things together??
  5. M

    Chemistry: Prediction of producs

    ah, touche! it is sulfate- don't know why when i typed it out i made it into sulfide. i was doing my own chemistry ;)
  6. M

    Chemistry: Prediction of producs

    Homework Statement Predict products (and then write formula unit, total ionic unit & net ionic equations)1. Sodium Nitrate, Ammonium sulfate and Iron (III) acetate. 2. Na3PO4 + RbClO3 + Sr(NO3)2 Homework Equations ----------- The Attempt at a Solution 1. NaNO3 + (NH4)2S + Fe(CH3CO2)3 I...
  7. M

    General Biology - Faciliated Diffusion

    Ah! Very true! You are right! I will make sure to put that change in now. Thanks for the reminder!
  8. M

    How to Calculate the atomic mass of this isotope?

    so 1 mol would equal whatever the atomic mass of this isotope is... you're given a sample of the isotope... think about how you would set up an equation to solve for "x" (x, in this case being the atomic mass)
  9. M

    General Biology - Faciliated Diffusion

    Ok. I think I've got my whole answer now... "Simple diffusion and facilitated diffusion are both types of passive transport in cells. Simple diffusion takes place with nonpolar molecules that have no issues crossing through the hydrophobic center of the bilipid layer. However, not all...
  10. M

    General Biology - Faciliated Diffusion

    He defined saturable as being that you can only go so fast before you hit a maximum speed. The example he gave us was if he was standing at the door of our classroom and to get out of the classroom you had to shake his hand. First of all, you are required to have a hand for him to shake to get...
  11. M

    General Biology - Faciliated Diffusion

    Homework Statement Explain why facilitated diffusion, unlike simple diffusion, is both specific and saturable. (Short essay, 4 points) Homework Equations -------------------------- The Attempt at a Solution Is this a good beginning to an answer? I feel like I can never...
  12. M

    Biology - Diffusion/Osmosis of 2 Solutions

    Ok- or would water not be moving at all? Since a mol isn't really a number it would be the same thing as saying "a dozen" of something. So- if I have apples(Na), oranges(Cl) and pears(K) I could say... Solution A- has 1/2 dozen apples, 1/2 dozen pears and a dozen of Cl. Solution B - has 1...
  13. M

    Biology - Diffusion/Osmosis of 2 Solutions

    Ok. I was able to figure out Part A while I was waiting for a reply. It was actually a multiple choice question with instructions to choose the correct answer or answers. So the choices for Part A were: (my answers are bolded) A. K+ will diffuse from A to B B. Na+ will diffuse from A to B...
  14. M

    Biology - Diffusion/Osmosis of 2 Solutions

    Homework Statement You have two solutions - Solution A = 0.5 M NaCl and 0.5 M KCl Solution B= 1.0 M NaCl If Solution A and B are separated by a) a membrane permeable to all three ions what will happen? and b) a membrane that ions can not pass through but that water can, what will...
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