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Explain what is the height of water column in meters? Define the density of mercury is 13.53 g/mL at 298 K and pressure is 6.30 mmHg
Which of the following does not have higher exp. S (entropy) than calculated S in pure H20, Which of the following effects is explained through ion pairing
Before electrolysis begins, bromthymol blue indicator solution is added to the colorless solution and the color is adjusted to green (neutral). Predict the colors that will result at each electrode and support these predictions with anode and cath..
What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
A sample of copper was pretreated and diluted to 500mL and portions of this solution were analyzed by measuring the absorbance of a copper (I) complex of 1, 20 phenanthroline using a standard addition technique.
a sample of hfrac12o with a mass of 46.0 grams has a temperature of -58.0 agravec. how many joules of energy are
The crucible is not fired, as the procedure suggests, but had retained some impurities from previous use. The mass of the "dirty" crucible is recorded.
stock soultions of thris base and tris acid how much of each would you use to make 100ml
Why is naturally occurring iron non-magnetic except when it is exposed to an external magnetic field (a secondary magnetic force). How is it possible to create a permanent magnet (ferromagnet) from a naturally occurring sample of iron.
A solution of water (Kf = 1.86 degrees C/m) and glucose freezes at -2.55 degrees C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 degrees C. Express the molal concentration numeri..
Which of the following substances, when dissolved in water, uses ion-dipole forces as the principal type of intermolecular attraction with water molecules. A) CH4 B) CH3OH C) CO2 D) KCl E) C6H6
Decane has 4.5 min retention time on HP-1 column (25 m length, 0.25 mm I.D., 0.33 mkm film thickness) at 120C. Calculate the capacity factor for decane on HP-1 column (25 m length, 0.25 mm I.D., 0.5 mkm film thickness) at 120C. Explain.
the delta H OF vaporization for a new substance is 45 kj/mol and its delta H sublimation is 62 kj/mol, how much energy is needed for freezing 2.75 mol of a substance
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