n the given information. You will not only be given credit if you calculate the

Question

n the given information. You will not only be given credit if you calculate the answer correctly, so be sure to use given problem even if there are more than one steps under the the information given in the original problem, not a previous answer. You must show your work for credit. Beer's Law A Ebc 2 wophenantene bsortis lqnt at soo nm, unichis we can then use ine spectrophotometr to measure The absorbance" used in this lab? lignt at sobwhis green light. do different chemicals emit different colors of light? when you hcat an automy some eiccvons result in higher energy Icvels an eiectron drvps trom one revel to ajower enery level,it émits a auea a enerayinewavelnath (cole of tnc liánt depends on me difterente in tme two eneray eves, 4. What is the molarity of the final solution if 2.00mL of the 5.00M stock solution is diluted to 10.00mL to make solution A 25.00mL Solution A undergoes a second dilution by taking 3.00mL solution A and diluting it to 5. Determine the mass of iron in the following solution. 325mL of 0.050M FeSO 129

Explanation / Answer

4. Solution A molarity = 5 M x 2 ml/10 ml = 1 M

Second dilution

final molarity of solution = 1 M x 3 ml/25 ml = 0.12 M

5. moles FeSO4 = 0.05 M x 0.325 L = 0.01625 moles

moles Fe = 0.01625 moles

mass Fe = 0.01625 moles x 55.845 g/mol

               = 0.91 g

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