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Explain what is the morality of a solution prepared by dissolving 54.3 g of calcium nitrate into 335mL of water?
Describe the mechanism of the preparation of 2-methyl-3-hexanol by reducing an appropriate carbonyl compound.
calculate the number of excess reagent units remaining when 84 C2H4 molecules and 270 O2 molecules react?
Is Guanine aromatic? It the C=O bond on top's pi electrons is outside of the ring. I was pretty sure it is not aromatic but I read somewhere that it is.?
If a neurons inter-celluar potassium level (K+) is 410mM and it takes -70mV to maintain resting cell potential, what is the concentration of potassium outside of the neuron
solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm. Calculate the absorbance of this solution.
the mass of the flask is measured when the outside of the flask is wet. outside of the flask is dried before the mass
It is stated that more than one unit cell can be chosen for a structure. If they represent the same structure, however, the unit cells must have the same types of atoms
The acid dissociation constants listed in most standard reference texts for carbonic acid actually apply to dissolved CO2. For a CO2 partial pressure of 8.3×10-4 atm in the atmosphere, what is the pH of water in equilibrium with the atmosphere
What is value of the activation energy, Ea, for this reaction. What is the value of the pre-exponential factor (sometimes called the frequency factor), A, for this reaction
Which group 5 oxide dissolves in water to give the most basic solution. A) As4O10 B) P2O5 C) N2O5 D) P2O3 E) Bi4O6
The rate of a first-order reaction is followed by spectroscopy, monitoring the absorption of a colored reactant at 520 nm. The reaction occurs in a 1.48- cm sample cell, and the only colored species in the reaction has an extinction coefficient of..
Make a drawing that illustrates how the diethylammonium ion might interact with tetrachlorocuprate(II), what are the hazards with this combination
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