Help please A student mixes 500 mL of 00020 M FeNO33 with 40

Help please!

A student mixes 5.00 mL of 0.0020 M Fe(NO3)3 with 4.00 mL of 0.0020 M KSCN solution and 1.00 mL water at a certain temperature. He places a sample of the resulting solution in a spectrometer, and measures the transmittance as 31% at 447 nm.

a) What are the initial concentration of [Fe3+] and [SCN-]?

b) What are the final concentrations of [Fe3+], [SCN-], and [FeSCN2+]?

c) What is the measured value of Keq?

The molar absorptivity at 447 nm ( = 4400). Path length = 1 cm.

Solution

a)

initial concentration of Fe+3 = 5 x 0.0020 / 5 + 4 + 1

                                             = 0.0010 M

intial concentration of SCN- = 4 x 0.0020 / 10

                                            = 0.00080 M

b)

Transmittance = 31 %

Absorbance = -log T = -log 0.31

absorbance = 0.5086

Note : you did not provide the equation . y = mx + C .

if you provide . i will do the remaining part of the solution. you missed some part