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At what temperature (in C) does benzene boil when the external pressure is 470 torr?
a 2.2 g sample of an unknown acid with an empirical formula of c3h4o3 is dissolved in 1 l of water. it requires a 25 ml
The solubility of the K3[Fe(C2O4)3].3H2O product at 00C is 4.7 g per 100 g water. Given this, calculate the maximum percent yield of product for your own reactant quantities.
which the Estandard cell potential is +.90 given that the Estandardreduction potential for sulfite is -.57V, calculate Estandard reduction for X.
you have 100 ml graduated cylinder containing 50 ml of water. you drop a 154 g piece of brass d 8.56 gcm3 into the
Concentrated sulfuric acid is roughly an 18 molar solution. To prepare 500 mLs of a 3 M solution, mLs of sulfuric acid should be.
What ions and/or molecules are present in relatively large proportions in a solution of a weak base NH4OH (aq)?
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching fequency, we would not have expected to observe the late stretching mode in the infrared spectum. Why?
A buffer containing 0.25 M NH3 (Kb = 1.8 x 10-5) and 0.40 M NH4Cl is prepared. a. What is the pH of this buffer solution. b. What is the pH of the solution after 25.00 mL of 1.00 M HCl is added to 975.0 mL of buffer
hat conclusions can you make concerning the size of the central atom X and the X-H bond length? Compare the four models of CHBrICI. Are they all the same (superimposable on each other? If the answer is yes, can you construct any that are not the s..
if 50.0 mL of 10.0 degrees ceclius water is added to 40.0 mL of 65.0 degrees celcius, calculate the final temperature of the mixture assuming no heat is lost to its surroundings,
Using a periodic table, arrange the following substances according to their expected lattice energies, listing them from lowest lattice energy to the highest: MgS, KI, GaN, LiBr. (Use the appropriate symbol to separate substances in the list
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