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melamori03 [73]
3 years ago
14

How many moles of Fe2O3 are in 231 g of the compound?

Chemistry
1 answer:
Damm [24]3 years ago
6 0
M Fe2O3 = 160
so the answer is 1.44375 moles
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A student sees an absorbance a=1.140 for his solution that has a concentration of c=1.50*10-4 m using 0.50 cm cuvette. what is t
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The molar extinction coefficient is 15,200 M^{-1} cm^{-1}.

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A = ξcl, where A represents absorption, ξ refers molar extinction coefficient, c refers to concentration and l represents length.

The given values are in required units, hence, there is no need to convert them. Directly keeping the values in formula to find the value of molar extinction coefficient.

Rewriting the formula as per molar extinction coefficient -

ξ = \frac{A}{cl}

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Performing multiplication in denominator to find the value of molar extinction coefficient

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Performing division to find the value of molar extinction coefficient

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