Asian

WHY COULDN'T YOU POST THIS EARLIER??????????????????????????????????????????????????????????????????????????????????????????? . You would have prevented me from getting pwned on a 15 pointer.......

dude i just got my psat back also. i also do very well in my math classes. and i only scored 480 on my psat , whats the deal???? im sure i will be ready when the real tests comes around though

Anyone know how to factor on a TI-83+?????????

guys its a little late, but thanks anyway. i think i got pwned on an uber hard question. the question gave us the dimesnisons of a room and we had to find how much gas fills it, it was super hard....

Does anyone know any examples of how a teacher could make a very diffuclut mol problem involving densitiy? i got a big test tomorrow and im trying to prepare for it

When solving a system using augmented matricies, how do u know when if the solution is inconsistent, if you continuously are trying to get th identity matrix

i was just thinking right now...... what would be the product if you were to heat copper sulfate pentahydrate??

yooo thanks for the help

Anyone know the chemical formula for when you heat a piece of magnesium ribbon???

How do you tell how many moles of an element are in a molecule??? Ex. CH4 (Methane). How would you be able to tell how many moles of carbon and how many moles of hydrogen???????

yea i know that, but they take a while, and for my test on monday my teacher is going to make us do it by "hand", so thats why i asked

Is there a certain strategy or way to solve these because they take a really long time. Im sure this stratgey would also work for inverse matricies.

I think I understand this now. If something is soluable based on the "rules" than we know that it dissolves in water and it must be aqueous. And whichever compound is not soluable than it is in the solid state (which is the precipitate). And usually in a double replacement reaction the general formula for the states is (aq)+(aq)------>(aq)+(s) where the solid is the preciptate. Also is this a correct statement? something that is a preciptate is insoluable. But my last question is how you came up with the net ionic equation on the previous post, im just a little confused on that.... - Thanks so much i understand this so much better

so if it is soluable, then the product will be a solid??? and if it is a precipitate it would be a solid? im not really sure what a precipitate is. One more thing we mainly use the solubility rules to write the net ionic equation? -thanks for the help guys

thanks for the help

for #1 there are a list of solubility rules for a double replacement reaction. i dont quite understand when to apply them in that type of reaction.

so im assuming #1 is single replacement.... i thought for combustion the products have to be h20 and c02

Would TinIV Acetate + Barium ------> be a synthesis reaction, im pretty sure it is, but i cant predict the product of this reaction And....... Octane (C3H13) + Oxygen-------->. What kind of reaction would this be, i have no clue even to where to start as far as predicting the products

For a Double Replacement Reaction, I don't understand how or when we use the "Rule for the Solubility of Salts in Water" Also....... How can you easily predict what state a compound is in, in any chemical reaction. Lastly....... How can you easily tell the difference between a Single Replacement Reaction and a Synthesis/Combination/Composition Reaction because i find it difficult to tell when a synthesis reaction is in the following form "element+compound---------> More Complex Compound" because a single replacement reaction is in the similar form when given the reactants. -Thanks for Any Help

How do you solve a 4 variable system with 4 other systems involved? What is the best apporach in solving it. -Thanks for the Help

im still not clear hwo you can account for the fair and poor conductors of electricity. i know that both produce a lack of ions to make them good conductors.

well isnt there no difference between the structual formula between 6 m of acetic acid, and 0.1 m of acetic acid. the only difference is that there is a different concentration of molecules. im going to assume glacial acetic acid has a different formula than the above two. so if basically if an element has a high electrognegativity it would be more likely to dissociate, is that correct?

so how could u tell if acetic acid would dissociate completely or partially by knowing the chemical structure.

thanks guys

what and how does hybridization of orbitals exactly work?