f) C=N (1) LiAlH4 (2) HCI in water

A sample is diluted by adding 20 pl to 780 ul of water. Its absorbance is then 0.950. A standard sample of the same 3.0 mM compound gives an absorbance of 0.475. the concentration (M) of the test sample is:

1. Develop a detailed separation scheme for the separation and determination of the percent composition of your sample which will be a mixture of NaCl, NH.CL, and sand. You are expected to use the properties of the components listed below and some of the techniques listed in the table in the pre-lab queries (and used in Separations I). Keep in mind that any chemistry student should be able to pick up your scheme, understand it, and use it to complete the separation and calculation of % composition. Place the scheme on a separate sheet of paper. Component Solubility (@25°C) Melting Point Hardness sodium chloride, NaCl 35 g/100 mL water 801°C soft ammonium chloride, NH&Cl 37 g/100 mL water sublimes 350°C soft sand, SIQ2 insoluble 1600°C hard Example of compounds in a container. Naci NH.CI sio2 Exploring the Chemical World, PGCC, 2003 4 RESULTS Show all calculations with units in this space.

Please don't  provide handwritten solution .....  The average human body contains 5,830g of blood. What mass of arsenic is present in the body if the amount in blood is 0.55 ppm?

www-awn.aleks.com O MEASUREMENT Deducing the unit missing from the solution to a basic qu.. A student sets up and solves the following equation to solve a problem in solution stoichiometry Fill in the missing part of the student's equation. 1 kg (135D 103 1 mL 0.65 kg (0.48 L) 3 10 ? 1 X

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The mass of K3PO4 needed to prepare 250.0mL of an aqueous solution in which PO4-3 concentration is 0.0550M.   The answer is ……………………… 6

Chem101 O Chem101 MOI Chem101 , A12(SO4)3'5H20 M I Balance Chemical E app.101edu.co Gaseous ammonia reacts with gaseous hydrochloric acid. Whic.. Question 39 google.com Gaseous ammonia reacts with gaseous hydrochloric acid. Which of the following describes the resultant solid compound, and its solubility in water? A) Ammonium nitrate, insoluble B) Ammonium chloride, insoluble C) Ammonium nitrate, soluble D) Ammonium chloride, soluble E) None of these answers are correct MacBook Air 80 F3 888 F4 トII F1 F2 F5 F6 F8 F9 F10 2$ 4 # & * 2 7 W E Y U くo

A particular beer is 6.50 % ethanol by volume (C2H6O). If a single bottle of beer contains 750.0 mL of beer, what mass, in g of ethanol (C2 H6O), is present in the bottle? The density of ethanol is 0.789 g ethanol/mL ethanol.

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