Chem question help quick!?

Posted on 1970-01-01 00:00:00 in Chemistry by BHALL

A 98 mL stock solution of a food colour having a molecular weight (molar mass) of 264.4 g mol-1 was made. 

1 mL of this stock solution was then diluted to 50 mL.

The absorbance of the diluted solution at 456 nm wavelength was 0.216 using a 1 cm cuvette. It is known that this compound has a molar absorptivity (extinction coefficient) of 409.7 mol-1 L cm-1 at this wavelength.

What was the mass of the food colour dissolved in the stock solution in mg?

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