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A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid? You must show how you set up the problem and all of your work.
consider the following unbalanced reaction.p4s f2g -gt pf3ghow many grams of f2 are needed to produce 120. g of pf3 if
The protons that give rise to the signal at 7 ppm are more shielded than the protons that give rise to the signal at 9 ppm. B) The protons that give rise to the signal at 7 ppm are less shielded than the protons that give rise to the signal at 9 p..
In aqueous solution, amphipathic molecules form aggregates of micelles or bilayers that maximize hydrophobic interaction. Describe and draw what would happen if instead of an aqueous solution, amphilic molecules were dissolved in an organic solven..
Which ions were present in the original solution? What are the net ionic equations for each reaction that occured?
Determine the age of a rock in years containing exactly twice as much U-238 (t1/2 = 4.5 x 10^9 yr) as Pb-206 by mass. (Assume all the lead came from U-238 decay).
Determine the enthalpy for this reaction: \rm 2NaOH (s)+ CO_2 (g) \rightarrow Na_2CO_3 (s) + 2H_2O (l) Express your answer in kilojoules per mole to four significant figures.
An alternate method for determining rate law is to moniter concentration of each reactant continuously over span of rxn. explain no more in 1 paragraph how rate law is derived from data obtained.
a piece of metal with mass of 125grams is placed into a graduatedcylinder that contains 25.0ml of water raising the
How much ice(in grams) would have to melt to lower the temperature 352ml of water from 25degrees celcus to 5 degrees celcus? ( assume the density of water is 1.0g/ml)
How much Ca(OH)2 is required to remove 90% of the PO4 3- from 5.5x10^6 L of drinking water containing 25 mg/L of PO4 3-
Which condition characterizes the stoichiometric point of any acid/base titration? a) equivalent molar amounts of acid and base have reacted. b) The pH is exactly 7.0 c) The indicator changes from pink to colorless
What is the 3D root mean square distance traveled by a particle with a diffusion coefficient D of (10^-5) m^2 s^-1 after 1000s and 10000s
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