Chemistry concepts and calculations

You wish to analyze the purity of a compound via TLC. If you wanted polar compou

You wish to analyze the purity of a compound via TLC. If you wanted polar compounds to remain near the bottom (or baseline) of the plate, what kind of TLC plate would you use? a. …

You wish to capture 3 mu m particles in a linear density gradient having a densi

You wish to capture 3 mu m particles in a linear density gradient having a density of 1.12 g/cm^3 at the bottom and 1.00 at the top. You layer a thin particle suspension on the to…

You wish to create a bufer inrus acid as your weak acid CHNO, K,-724. Part 1: If

You wish to create a bufer inrus acid as your weak acid CHNO, K,-724. Part 1: If you have 41.4 mL of an 0.121 M solution of HN02 and 0.147 M solution of Nor what is the pH? 3.22 P…

You wish to create a three dimensional box that has a continuous energy spectrum

You wish to create a three dimensional box that has a continuous energy spectrum in two dimensions and a discrete energy spectrum in the third dimension. Which of the following st…

You wish to determine the molecular weight of an unknown biomolecule. It is slig

You wish to determine the molecular weight of an unknown biomolecule. It is slightly soluble in hexane; you are able to dissolve 10.0 mg in 100 mL of hexane. 1) If your osmometer …

You wish to determine whether isocratic or gradient elution should be used for a

You wish to determine whether isocratic or gradient elution should be used for a separation. For the initial run, a wide gradient from 5 vol% to 95 vol% B was used. For a 0.40 × 1…

You wish to determine whether isocratic or gradient elution should be used for a

You wish to determine whether isocratic or gradient elution should be used for a separation. For the initial run, a wide gradient from 5 vol% to 95 vol% B was used. For a 0.48 × 1…

You wish to make 3 reactions (1 ml each) with the specified amounts of protein.

You wish to make 3 reactions (1 ml each) with the specified amounts of protein. The remainder of each reaction consists entirely of buffer. The source of your protein is a stock s…

You wish to make a 0.332 M nitric acid solution from a stock solution of 12.0 M

You wish to make a 0.332 M nitric acid solution from a stock solution of 12.0 M nitric acid. How much concentrated acid must you add to obtain a total volume of 50.0 mL of the dil…

You wish to make a 0.413 M hydrochloric acid solution from a stock solution of 3

You wish to make a 0.413 M hydrochloric acid solution from a stock solution of 3.00 M hydrochloric acid. How much concentrated acid must you add to obtain a total volume of 175 mL…

You wish to make a 1 liter solution of 0.1 M sodium phosphate buffer (pH 6.80).

You wish to make a 1 liter solution of 0.1 M sodium phosphate buffer (pH 6.80). Phosphoric acid (H3PO4) has three protons that may dissociate, with pKa values of 2.12, 7.21, and 1…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the concentration of methyl benzoate in a plant stream by ga

You wish to measure the concentration of methyl benzoate in a plant stream by gas chromatography. You prepare a sample of butyl benzoate to use as an internal standard. A prelimin…

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe^3+ solution with a concentration of 7.38 times…

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe^3+ solution with a concentration of 7.82 times…

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 7.66 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 6.52 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 6.11 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe" solution with a concentration of 7.76 x 10* M…

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 5.26 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 6.86 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 6.75 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 7.39 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

          You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3  solution with a concentration of 6…

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3 solution with a concentration of 8.65 × 10-4 …

You wish to measure the iron content of the well water on the new property you a

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe" solution with a concentration of 7.76 x 10* M…

You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.660. To do th

You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.660. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in…

You wish to prepare 100 mL (total volume) of a buffer solution that is 0.025 M i

You wish to prepare 100 mL (total volume) of a buffer solution that is 0.025 M in carbonic acid, pH 7.25. You have solid H2CO3 and solid NaHCO3. Calculate how many grams of H2CO3 …

You wish to prepare 100 mL of 0.750 M HCI from concentrated HCI (11.65 M). You a

You wish to prepare 100 mL of 0.750 M HCI from concentrated HCI (11.65 M). You are provided with a 100 mL volumetric flask and a 10 mL graduated pipet with 0.00 line at the top an…

You wish to prepare 100 mL of 0.750 M HCI from concentrated HCI (11.65 M). You a

You wish to prepare 100 mL of 0.750 M HCI from concentrated HCI (11.65 M). You are provided with a 100 mL volumetric flask and a 10 mL graduated pipet with 0.00 line at the top an…

You wish to prepare 100 mL of a 0.200 M solution by dilution of a 1.0 M solution

You wish to prepare 100 mL of a 0.200 M solution by dilution of a 1.0 M solution. Which of the following pieces of glassware will you use? 100 ml graduated cylinder 100 ml volumet…

You wish to prepare 100 mL of a 0.200 M solution by dilution of a 1.0 M solution

You wish to prepare 100 mL of a 0.200 M solution by dilution of a 1.0 M solution. Which of the following pieces of glassware will you use? 100 ml graduated cylinder, 100 ml volume…

You wish to prepare 100. milliliters of 0.0400 M phosphate buffer, pH 6.50, from

You wish to prepare 100. milliliters of 0.0400 M phosphate buffer, pH 6.50, from phosphoric acid [a liquid; specific gravity = 1.69, assay by weight = 85.6%; MW = 97.999] and pota…

You wish to prepare 250. mL of a 0.300 M Tris buffer at room temperature (25 C)

You wish to prepare 250. mL of a 0.300 M Tris buffer at room temperature (25 C) such that it has a pH of 7.80 at 10.0 C. Starting with Tris base (F.W. 121.2, 99.9 % purity), answe…

You wish to prepare 250. mL of a 0.300 M Tris buffer at room temperature (25 C)

You wish to prepare 250. mL of a 0.300 M Tris buffer at room temperature (25 C) such that it has a pH of 7.80 at 10.0 C. Starting with Tris base (F.W. 121.2, 99.9 % purity), answe…

You wish to prepare 50.0 milliliters of 0.0500 M phosphate buffer, pH 6.90, from

You wish to prepare 50.0 milliliters of 0.0500 M phosphate buffer, pH 6.90, from phosphoric acid [a liquid; specific gravity = 1.69, assay by weight = 85.696; Mw = 97.999] and pot…

You wish to prepare 50.0 milliliters of 0.0500 M phosphate buffer, pH 6.90, from

You wish to prepare 50.0 milliliters of 0.0500 M phosphate buffer, pH 6.90, from phosphoric acid [a liquid; specific gravity = 1.69, assay by weight = 85.696; Mw = 97.999] and pot…

You wish to prepare 50.00 mL of 0.0250 M NH3 from concentrated ammonia (15.28 M)

You wish to prepare 50.00 mL of 0.0250 M NH3 from concentrated ammonia (15.28 M) by serial dilution using two 50 mL volumetric flasks, a 1.00 mL pipet, and a 10.00 mL graduated pi…

You wish to prepare 50.00 mL of 0.0250 M NH3 from concentrated ammonia (15.28 M)

You wish to prepare 50.00 mL of 0.0250 M NH3 from concentrated ammonia (15.28 M) by serial dilution using two 50 mL volumetric flasks, a 1.00 mL pipet, and a 10.00 mL graduated pi…

You wish to prepare 50.00 mL of 0.0350 M NH3 from concentrated ammonia (15.28 M)

You wish to prepare 50.00 mL of 0.0350 M NH3 from concentrated ammonia (15.28 M) by serial dilution using a 50 mL volumetric flasks, a 1.00 mL volumetric pipet, and a 10.00 mL gra…

You wish to prepare 50.00 mL of 0.0350 M NH3 from concentrated ammonia (15.28 M)

You wish to prepare 50.00 mL of 0.0350 M NH3 from concentrated ammonia (15.28 M) by serial dilution using two 50 mL volumetric flasks, a 1.00 mL pipet, and a 10.00 mL graduated pi…

You wish to prepare 50.00 mL of 0.0450 M NH 3 from concentrated ammonia (15.28 M

You wish to prepare 50.00 mL of 0.0450 M NH3 from concentrated ammonia (15.28 M) by serial dilution using a 50 mL volumetric flasks, a 2.00 mL volumetric pipet, and a 10.00 mL gra…