You weigh out 105 mg of Winterium Flakide (Formula WiFl2, mw = 90.380 g/mol) and dissolve it in 2.3 L of water. What is the concentration of Winterium (mw 24.500 g/mol) to three decimal places in ppm.
You weigh out 70 mg of Icium Chrystalide (Formula Ic2Ch3, mw = 93.494 g/mol) and dissolve it in 1.7 L of water. What is the concentration of Icium (mw 24.500 g/mol) to three decimal places in ppm.
You are asked to make 1.9 L of a 110 ppm solution of Icium (mw 23.375 g/mol) using Icium Chrystalide (Formula Ic2Ch3, mw = 84.152 g/mol). How much Winterium Flakide do you need to weigh out to achieve this? Report your answer to 3 decimal places.
You analyze standard solutions of sodium, create a calibration curve and obtain an equation of the line: y = 279.872x + -2.978. You take an unknown and dilute it: 14 mL into a 796.1 mL volumetric flask and filled to the mark. You analyze it and find an emission intensity of 65. What is the concentration of the original unknown in ppm to 3 decimal places.
Chemical Concentrations and Calculations
