AP chem question?

Posted on 2015-10-13 06:09:00 in Chemistry by JULIANA

Hello! I am stuck on these three homework problems and would appreciate if you would help explain it to me.

If each of the following were placed in water, identify the ions (if any) that would exist in solution and specify concentration of each.

a) 2.4mol (NH4)2CO3

b) 0.2 mol HClO2

c) 2.00 mol AgCl

d) 4.5 mol HBr

In acid solution, 45.0 mL of KMnO4 solution is required to react wuth 50.0mL of 0.250 NH2C2O4 to give Mn2+ and CO2 as products. How many mL of this same solution are required to oxidize 25.0 mL of 0.250 M K2C2O4 to yield MnO2 and CO2?

A particular pollutant was present in H2O at concentration of 825 ppm

a) concentration percent by mass

b) If pollutant was C6H6 what is molar concentration (1Kg/L is density)

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