Determine the mass of chloride (mw = 35.45 g/mol ) in grams present in 100 ml of a 0.273 m solution of aqueous fecl₃ (iron(iii) chloride). express the mass in grams to three significant figures.

The mass chloride is 2.903 grams

Explanation:

Step1: calculate the moles of FeCl3

moles = molarity  x  volume  in liters

volume in liters = 100 ml /1000 =  0.1 L

molarity = 0.273  M  =  0.273  mol / L

moles   =   0.273  mol /L  x 0.1 L = 0.0273   moles

step 2:  find the moles of Cl

since there is  3  atoms of  cl in FeCl3

= 3 x 0.0273 =0.0819 moles

Step 3:  calculate  mass  of cl

 mass= moles  x molar mass

=0.0819 moles x 35.45 g/mol = 2.903 g

True should be your answer because in the spectrum the colors are all crampped together and on a rainbow they are spred out. I hope this helped!