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Calculate the volumes of the working stock standard solution that needs to be added into purified water (total volume 1 mL) to generate standard solutions of concentrations 10, 50, 100, 200, 500, 1000, 2000 and 5000 ng L-1
Calculate the ph at the equivalence point for the titration of 1.0 m ethylamine by 1.0 m perchloric acid
3, 4-dimethoxyacetophenone was my unknown ketone as well as when I reacted it with 2,4 DNPH the solution became a red color indicitating that it was a conjugated ketone.
Does the product xyz necessarily vanish when integrated over a a) cube, b) tetrahedron, c) hexagonal prism, each centered on origin?
Draw the line structure of your models. Are these molecules isomers? If they are isomers, to what specific category do they belong to?
Question- Part 1) For each of the following complexes, give the electronic configuration of the d - orbitals (e.g. t 2 g^ 3 eg ^1 ), indicate whether the complex is high - spin or low - spin, and give the number of unpaired electrons:
calculate the molar heat of vaporization of a substance given that 0.383 mol of the substance absorbs 24.1 kj of energy
How many moles of (NH4)2SO4 are there in 100.00 g of ammonium sulfate? How many ammonium ions are in 100.00 grams of ammonium sulfate? Use Avogadro's number, 6.0221 x 1023 ions/mol.
Determine the new pressure of the gas and express your answer in Pa
If this cell is allowed to operate, will Ecell increase, decrease or remain constant over time? Briefly explain.
what mass of magnesium in reaction with hydrochloric acid is needed to produce 128 ml of hydrogen h2 gas? the h2 gas is
Disregarding any other losses and treating the animal as a closed system, what was the change in internal energy of the animal?
Determine the pH change when 0.090 mol KOH is added to 1.00 L of a buffer solution that is 0.384 M in HCN and 0.385 M in CN-.
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