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Even if a cospotted TLC analysis of an unknown with an authentic standard is performed, one still does not know with complete certainty taht the unknown and the standard are identical. Why is this true? what alternatives would one consider to prove the structural identity of the unknown without any ambiguity?
A proton in a linear accelerator has a de Broglie wavelength of 144 pm. what is the speed of the proton?
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
a second reaction has a standard Gibbs free energy of -55 kJ/mol. What is the ratio of their equilibrium constants at 300 K?
In the following experiment, a coffee-cup calorimeter containing 100. of is used. The initial temperature of the calorimeter is 23.0 . If 6.80 of is added to the calorimeter, what will be the final temperature of the solution in the calorimeter
Require to apply to neutralize the acidity that concluded from nitrification and determine how much CaCO 3
exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?
What is the conductivity of a solution. How do the size and charge of ions affect the conductivity of a solution. Which of the following ions would exhibit the greatest conductivity? a)Li+ or CS+ ? b)Mg2+ or Al3+ ?
If the most common monosaccharides have the formula C6H12O6, why do the resulting disaccharides have the formula C12H22O11, rather than C12H24O12
Bonding in some solids does not fit neatly into one of the four categories. Explain why the bonding in Na2CO3 is not purely ionic.
Calculate the correct volume of sulfuric acid which will need to be added to neurallize the base. The chemical reaction involves Al(OH)3 and Fe2O3 reacting with KOH and H2SO4 with the end product being KAL(SO4)2*12H2O.
what tecnhique is used to separate the active ingredient from each of these compounds citric acid sodium benzoate
What volume of hydrogen gas at STP is required for the complete reaction of 50.0 g of nitrogen in the following reaction? N2(g) + 3 H2(g) ? 2 NH3(g)
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