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To find the number of Br atoms in 2.50 g of Br, you first need to convert grams to moles using the molar mass of Br. Then, you can use Avogadro's number (6.022 x 10^23) to convert moles to atoms. Remember to check the molar mass of Br to ensure accurate calculations.

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1y ago

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How many grams of Br are in 595 g of CaBr2?

To find the grams of bromine (Br) in 595 g of calcium bromide (CaBr2), first determine the molar mass of CaBr2. The molar mass is approximately 40.08 g/mol for Ca and 79.90 g/mol for Br, giving a total of about 199.89 g/mol for CaBr2. Since there are two bromine atoms in each formula unit, the mass of bromine in CaBr2 is about 159.80 g (2 × 79.90 g). Thus, the mass of Br in 595 g of CaBr2 can be calculated as follows: (159.80 g Br / 199.89 g CaBr2) × 595 g CaBr2 ≈ 477.23 g of Br.


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