Answer :
Final answer:
To determine the number of moles in 10.1 g of diphosphorus bromide, calculate the molar mass of the compound and use the formula moles = mass / molar mass.
Explanation:
To determine the number of moles in 10.1 g of diphosphorus bromide, we need to first calculate the molar mass of the compound. The molar mass of diphosphorus bromide (P2Br4) can be calculated by adding the atomic masses of phosphorus and bromine. The atomic mass of phosphorus is 31.0 g/mol, and the atomic mass of bromine is 79.9 g/mol. Therefore, the molar mass of diphosphorus bromide is (2 * 31.0 g/mol) + (4 * 79.9 g/mol) = 279.8 g/mol.
Next, we can use the formula:
moles = mass / molar mass
Substituting the values, we have:
moles = 10.1 g / 279.8 g/mol
Calculating this gives us:
moles ≈ 0.036 moles
Therefore, there are approximately 0.036 moles of diphosphorus bromide in 10.1 g of the compound.
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