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Answer :
Answer:
The answer to your question is 131.43 grams of MgBr₂
Explanation:
Data
number of grams = ?
number of atoms = 4.3 x 10²³
Molecule = MgBr₂
Process
1.- Calculate the molar mass of MgBr₂
MgBr₂ = 24.3 + (79.9 x 2) = 24.3 + 159.8 = 184.1 g
2.- Use proportions to calculate the number of atoms
184.1 g of MgBr₂ -------------- 6.023 x 10²³ atoms
x -------------- 4.3 x 10²³ atoms
x = (4.3 x 10²³ x 184.1) / 6.023 x 10²³
x = 7.92 x 10²⁵ / 6.023 x 10²³
x = 131.43 grams
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