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chemistryfrom Yahoo AnswersTuesday, 13th Dec 2011 - 8:12 pm I'm a sophomore in high school but I've been thinking a lot about college. I'm really interested in drugs and how drug are metabolized in the body as well as their chemical compositions. I love chemistry and plan on taking IB Chemistry... Tuesday, 13th Dec 2011 - 8:12 pm Na2CO3 + CaCl2 -> CaCO3 + 2NaCl
There is 3.00 g of Na2CO3 and 2.50g of CaCl2.
Which is the excess reagent and which is the limited reagent?... Tuesday, 13th Dec 2011 - 8:12 pm i like to mix things whether its cooking , growing plants, and pretty much anything. I also like to lify heavy things, and get my hands dirty. I would like to use tools and a computer ...im just throwing things out there... Tuesday, 13th Dec 2011 - 8:12 pm For the reaction: 4NH3 + 5O2 yeilds 4NO + 6H2O
Use the standard enthalpies of formation to calculate the enthaply change for this reaction (changeH0rxn)... Tuesday, 13th Dec 2011 - 8:12 pm Hey everyone. Can someone please tell me if I answered this correct.
Question:
Write balanced equations to represent each reaction observed and classify each reaction as one of the five reaction types studied in this unit.
A) nickel (II) su... Tuesday, 13th Dec 2011 - 8:12 pm Which of the following statements is/are true?
A. strontium nitrate and calcium carbonate are soluble salts
B. barium fluoride and lithium chloride are soluble salts
C. barium nitrate and sodium phosphate are soluble salts
D. copper (II) iodi... Tuesday, 13th Dec 2011 - 8:12 pm Suppose all of the gases shown are at the same temperature. In which gas will the particles be moving the slowest?
a. nitrogen gas
b. argon gas
c. helium gas
d. carbon monoxide gas
e. sulfur hexafluoride gas
f. phosphorus pentachloride gas... Tuesday, 13th Dec 2011 - 8:12 pm Determine the amount of heat (in kJ) given off when 1.26x10^4g of NO2 are produced accocording to the equation: 2NO+O2 yields 2NO2 changeH= -114.g kJ/mol... Tuesday, 13th Dec 2011 - 8:12 pm I did a thermo lab and measured temperature change...
I put hot water in aluminum covered beaker and measured the before and after temperature. I also did this with sponge covered beaker etc... what kind of calculations can I do with this that deal ... Tuesday, 13th Dec 2011 - 8:12 pm I need some advice. Right now I am a junior in highschool and one day would want to be a doctor of some kind. Maybe studying pathology. The thing is I am doing awful in my accelerated chemistry class, like if I pass it will be a 69-75 percent. Is thi... |
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