# Posts by pookie

Total # Posts: 19

Rusk High School
A desert scrub ecosystem is found in all of the following South Asian countries

chemistry
Then why am I calculating the moles if I just need to look up the Change in H for products and reactants...that isn't going to give me the heat released. What formulas do I need to use?

science- chemistry
what is the rate of reaction, if rate of consumption of iodide is 2.130x10^-5? 5I-(aq)+IO3-(aq)+6H+(aq)<-> 3I2(aq)+3H2O(l)

Chemistry 212
the half life of F18 is 2.089x10^-4yrs. How long would it take (in days) for F18 to decrease to 78.71% of its initial amount?

Chemistry 212
thanks a bunch!

Chemistry 212
Ksp = [Ra^+2][SO4^-2] 4.3x10^-11 = [x][x] x=6.56x10^-6 6.56x10^-6 + .1381?? is that how im suppose to do it?

Chemistry 212
What is the solubility of RaSO4 in 0.1381M Na2SO4? Ksp = 4.3x10^-11?

accounting
a 15 year bond pays 11% on a face value of \$1000. If similar bonds are currently yeilding 8%, what is the market value of the bond? use annual analysis

accounting
a 10 year bond pays 8% on a face value of \$1000. If similar bonds are yeilding 10%, what is the market value of the bond. use annual analysis

accounting
the longer the time to maturity: the greater the price increase from an increase in interst rates; the less the price increase from an increase in interest rates; the greater price increase from a decrease in interest rates; the less the price decrease fron a decrease in ...

accounting
a ten year bond pays 11% interest on a \$1000 face value annually. If it currently sells for \$1195.00 what is its approximate yeild to maturity?

accounting
a higher interest rate would: reduce the price of corprate bonds; reduce the price of preferred bonds; reduce the price of common stock; all of the above

Scince
so basicllly I have to change my experiment or add more to it. The leaves are still grren here so there are plenty of trees to pick from. I guess I can let on brown and cover another with foil. would this work as an experiment?

Scince
My Hypothesis was the I beleive leaves change color due to photosynthisis.

Scince
am having trouble with Restate the problem in terms of the following: Manipulated variable Constant (control) variables Principles of experimental design State in correct form the hypothesis you intend to demonstrate. I have conducted the experiment but I am not sure how to ...

science
the experiment was How do leaves change color? I collected 2 large leaves from a maple and acorn tree. I chopped the leaves into very small pieces and put them into small jars labeled with the name or location of the tree. I added rubbing alcohol to each jar to cover the ...

science
I am having trouble with Restate the problem in terms of the following: Manipulated variable Constant (control) variables Principles of experimental design State in correct form the hypothesis you intend to demonstrate. I have conducted the experiment but I am not sure how to ...