Final answer:To find the formula units in 2.3g of NH4SO2, you must calculate the moles from the mass given and then multiply by Avogadro's number, assuming the correct molar mass is used.Explanation:To calculate how many formula units are in 2.3 grams of NH4SO2, you first need to determine the molar mass of NH4SO2, then use Avogadro's number to find the number of formula units. However, it appears there's a typo in the formula given. Assuming the intended compound is (NH4)2SO4, ammonium sulfate, which has a molar mass of approximately 132.14 g/mol, you would use the following steps:Divide the given mass (2.3 g) by the molar mass of (NH4)2SO4 to find the moles.Multiply the number of moles by Avogadro's number (6.022 × 1023) to find the number of formula units.Please note that without the correct chemical formula, the molar mass used in this calculation might not be accurate for NH4SO2. It is important to use the correct formula to ensure an accurate calculation....

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