Chemistry, 28.06.2019 17:30 Itsyourgirllulu
You wish to measure the iron content of the well water on the new property you are about to buy. you prepare a reference standard fe3 solution with a concentration of 5.17 ă— 10-4 m. you treat 13.0 ml of this reference with hno3 and excess kscn to form a red complex, and dilute the reference to 45.0 ml. the diluted reference is placed in a cell with a 1.00-cm light path. you then take 30.0 ml of the well water, treat with hno3 and excess kscn, and dilute to 100.0 ml. this diluted sample is placed in a variable pathlength cell. the absorbance of the reference and the sample solutions match when the pathlength is 4.78 cm. what is the concentration of iron in the well water? for each solution, the zero is set with a blank.
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Chemistry, 21.06.2019 23:10
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
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Chemistry, 22.06.2019 00:40
1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /
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Chemistry, 22.06.2019 12:30
Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17
Answers: 1
You wish to measure the iron content of the well water on the new property you are about to buy. you...
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