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The absorption coefficient of a new complex FeX2 (X=1,10 phenanthroline, MW = 180.21) was measured as 1,400 / M cm at 355 nm. what would be the measured absorbance at this wavelength if 0.100g of Fe(NO3)2 was mixed with 0.100g of phenthroline ligand in 500mL of water, and 3-mL sample was measured in a 1cm cuvette?
What is the atomic radius of each atom that composes it If the length of a face centered cubic unit cell is 0.200 nm,?
calculate the weight of potassium chlorate required to prepare 380ml of wet oxygen collected over water at 20degrees
A solution is prepared by mixing 0.3355 mol of NaNO3 (84.995 g mol-1) with 235.0 g of water (18.015 g mol-1). Its density is 1.0733 g mL-1. What is the molality of the solution?
flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 10.0 mL of 0.220 M NaOH. 1. what volume of NaOH is needed to reach the end point of the titration?
a sample of KHC2O4 weighing 0.717g was dissolved in water and titrated with 23.47 mL of an NaOH solution. caluculate the molarity of the NaOH solution.
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
How do I calculate the product distribution calculations of the three peaks? Or the product ratios? The first peak was at 0.600, second at 0.95. Those are the retention times
Calculate the concentration of all species in a 0.100 M phosphoric acid solution. These species include [H3O+], [H2PO3-], [H3PO3], and [HPO32-]. For phosphoric acid, Ka1 = 3.0 x 10^-2 and Ka2 = 1.7 x 10^-7. (Only two of the hydrogens are ionizable..
A sample of nitrogen (9.27g) reacts completely with magnesium, according to the equation: 3 Mg + N2 -> Mg3N2. The mass of Mg consumed is ____g?
0.755 mole of bismuth oxide reacts with an excess of carbon to form bismuth metal according to the following reaction: Bi2O3(s) + 3 C(s)-> 2 Bi(s) + 3 CO(g) How many moles of Bi form?
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1;
What is E for the transition of an electron from n = 7 to n = 4 in a Bohr hydrogen atom. What is the frequency, of the spectral line produced
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