What is the concentration of salicylate in mg/dL in an unknown salicylate solution whose absorbance is 0.185? (Give your answer to 2 decimal places) Salicylate solution concentration (mg/dL) 1.00 2.00 3.00 4.00 5.00 Absorbance at 528 nm 0.162 0.223 0.262 0.359 0.401

A packet of Emergen-C contains 1.000 x 103 mg of vitamin C, also known as ascorbic acid. If this packet were dissolved in 0.25 L of water, what would be the molarity of ascorbic acid in the solution? The molar mass of ascorbic acid is 176.124 g/mol. 1.4x10-3 M 23 М 700 M 2.3x10-2 M 4.0 M Submit Request Answer

14. The concentration of the original unknown protein solution is determined to be 0.2173 mg/mL. What is the protein concentration in the units of parts-per-million (ppm)? One ppm = 1 mg/L. 0.217 4602 217.3 217

1. What percent solution if 11.2 g of Na2SO4  is dissolve to make 112 g of solution?  Answer to 2 decimal place 2. The concentration of sugar in a soft drink is measured to be 8.60%.  How many grams of sugar are in 268 g of the drink? Answer to 1 decimal place 3. If you have 3.40 g of NaOH solid, what mass of solution can be made to 0.32 % concentration? Answer to 1 decimal place 4. What mass of KF is need to prepare 440 mL of 0.12 M solution?  Answer to 2 decimal places.  Include the unit. 5. The concentration of sugar in a soft drink is measured to be 9.2 %.  How many grams of sugar are in 196 g of the drink?  Answer to 1 decimal place 6. What mass of KNO3 is need to prepare 626 mL of 0.24 M solution?  Answer to 2 decimal places.  Include the unit. 7. What is the molarity if 886 g of (NH4)2CO3 to make 1,716 mL of solution?  Answer to 2 decimal places.  Answer to 2 decimal places.

You you have a very concentrated solution (12 M) of potassium chloride (KCl). You need it to be at the lowest concentration possible for the experiment you are about to conduct. The problem is you forgot to order lab supplies, so you only have 2 L of distilled water left. What would be the final concentration if you added the 2 L of distilled water to the 0.5 L of 12 M KCl?

A dopamine vial that contains 200 mg in 5 mL is diluted with 0.9% sodium chloride to prepare a total volume of 500 mL. What is the concentration (in micrograms per mL) of dopamine within the 500 mL?

Use the graph on the last page to answer questions 10, 11 and 12. At 80˚C, what mass of sodiumchloride dissolves in1.0 L of water?

How many of the data sets listed could be used to find the number of grams of solute in solution? 34567 27 g of unknown compound in water ( Compound is Soluble) A 0.05 M MgCl2 solution x 1022 molecules of unknown compound in water A 1.2 L solution of MgCl2 with 0.05 M Mg²+ A 1.2 L solution of MgCl2 A 1.2 L solution of unknown compound with 0.05 M Cl- 15 x 1022 molecules of nonelectrolyte CH3OH in water

Use the solubility graph to answer the following question. Name the type of solution if 750 g of NaNO3 was placed in 600 mL of the water at 50 °C. Solubility Curves KI Solubility (g/L of solvent) 1400 1300 1200 1100- 1000 900 800 700- 600 500 400 300 200 100 0 polyunsaturated unsaturated saturated 0 supersaturated -HCI saturated with excess solute SO₂ NaNO3 -KNO₂ NHẠCH KCI -KCIO3 NaCl NH3 10 20 30 40 50 60 70 80 90 100 Temperature (°C)

A small portion (2.22 mL) of ascorbic acid solution (0.2310 mg/L) was transferred to a volumetric flask. Then, water was added up to the 100.0 ml mark of the volumetric flask (ie, the final volume of the diluted solution was 100.0 mL) Calculate the concentration (in mg/L) of the diluted ascorbic acid solution.