Potassium iodide (ki) is often added to table salt as a dietary source of iodine. how many moles of ki are contained in 1.00 lb of table salt containing 0.0073% ki by mass?
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mol

0.0002 moles if KI

Explanation:

First we need to transform lb in grams

1 lb = 453.6 grams

Now we need to find the quantity of KI in table salt

mass KI = concentration × table salt mass

mass KI = (0.0073 / 100) × 453.6 = 0.0331 grams

Now we calculate the number of moles of KI with the following formula:

number of moles = mass / molecular weight

number of moles = 0.0331 / 166 = 0.0002 moles if KI

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