Question

A chemist determines by measurement that 0.0900 moles of iodine solid participate in a chemical reaction. Calculate the mass of iodine solid that participates. Be sure your answer has the correct number of significant digits

Answer 1

We have 0.0900 moles of iodine solid which formula is I2

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Molecular weight = 253.8089 g/mol

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We are going to use this:

`\begin{gathered} \text{Moles = }\frac{\text{grams}}{\text{molecular weight}} \\ \text{Moles x Molecular weight = grams} \\ 0.0900\text{ moles x 253.8089 }\frac{g}{\text{mol}}=22.8428g_{} \end{gathered}`

Answer: Mass of iodine solid = 22.8428 g