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Question- What would you expect to see if paper chromatography had been touched by fingers before developing with solvent? What about after it has been developed with solvent, but before staining with ninhydrin?
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Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules. (Draw complete Lewis structures.
A buffer is made up of 355 mL each of 0.200 M NaHCO3 , and 0.134 M Na2CO3 . Assuming that volumes are additive, calculate
We did an experiment to isolate acetylsalicyclic acid from aspirin using methanol. We crushed the aspirin tablet before the extraction began. Why were we instructed to crush the aspirin tablet before proceeding
If an ion having 4+ charge and a mass of 49.9amu has 2 electrons with principle quantum number n=1, 8 electrons with n=2, and 10 electrons with n=3. Provide nas many of the properties for the ion as possible from the information given.
calculate the mass in grams of sucrose in 1.0 kg of a 0.25 sucrose
What is the mole fraction of solute and the MOLAL (MOLALITY NOT MOLARITY!!!!!) concentration for an aqueous solution that is 14.0% NaOH by mass
An empty gasoline can with dimensions 15 cm by 40 cm by 12.5 cm is attached to a vacuum pump and evacuated. if the atmospheric pressure is 14.7 lb/in^2.
by solving this problem student is ablenbsp to understandnbsp how to calculate theoretical and percent yields in an
describe the intermolecular forces that must be overcome to convert h2se liquid into a
one reaction that occurs in producing steel from iron ore is thereduction of iron ii oxide by carbon monoxide t give
Question- The predominant isotope of gold, 197/79Au, has an experimentally determined exact mass of 196.967 amu. What is the total nuclear binding energy of gold in electronvolts per atom
In a reaction, 82.00 g of sodium reacts with 74.00 g of ferric oxide to form sodium oxide and iron metal. Calculate the mass of solid iron produced
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