4. Calculate the concentration of the following analyte, expressed in ppm. Identify the type of analysis and the type of constituent in each situation: a. 325 mg of ferrous sulfate in 1.80 grams of iron supplement tablet b. 8 ug of Cr in 0.08 grams of dust

What is the full equation (not the net ionic equation) for the chemical reaction of 0.001 M Fe(NO3)3 plus 0.0002 M NaSCN diluted up to 10 mL with 0.1M HNO3? Please include the acid that is the diluent.

A student determined the concertration of NaOCI in a commercial bleach sample using the same technique described in section "F" of the Halogens and Their Compounds lab. The student required 18 drops of 0.01M Na25203 to reach the end point. What is the concentration (reported in percentage) of NaOCI in the bleach sample?

2. An effluent waste stream contains 3300mg/L organic matter ((CH2O) suspended and dissolved) and 27mg / L ammonium ion NH4+ (as N). Write chemical equations for the complete oxidation of (CH2O) and NH4+ and calculate the total BOD of this effluent in mg/L O2

Please help to calculate a dilution factor and the amount of mg in the vitamin. There are 1.13 ppm of iron. An unknown vitamin was dissolved in 25 ml of 6 M of HCl. Then brought up to 100 mL with DI water.  Dilute 5.00 mL of solution A to 100.0 mL in a 100.0-mL volumetric flask. This is Solution B.Transfer 10.00 mL of Solution B to a 100.0-mL volumetric flask.  Based on this dilution, the dilution factor is 200, so how many mg of iron is in vitamin?

Additives that may be included in the mobile phase for SEC hexane Salts Detergents Urea

Ten grams of soil were displaced with 250 mL of 1 M ammonium acetate and made to a final volume of 1 L. Analysis of the final l-L solution showed 20 mg/L Ca, 2 mg/L Mg, 1 mg/L K, and 0.5 mg/L Na. Estimate exchangeable cations in meq/100 g soil.

What is the concentration of Fe2+, in M, in a standard solution prepared by diluting (3.2x10^0) mL of (NH4)2Fe(SO4)2 solution that has a concentration of 2.50 x 10-4 M to a total volume of 50.00 mL with deionized water?

“Hard” water contains about 2.0 x 10-3 moles Ca2+ per Liter. Calculate the maximum concentration of fluoride that could be present in hard water. Ksp = 4.0 x 10-11