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The mass of a single barium atom is 2.28×10-22 grams. How many barium atoms would there be in 306 milligrams of barium? |
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Answer» Given: MASS of single barium atom = 2.28×10⁻²² grams Mass of barium = 306 MILLIGRAMS = 0.396 grams To FIND: Number of ATOMS in 306 milligrams of barium Calculation: We know the formula Number of atoms = Total mass / Mass of single atom = 0.306 / 2.28×10⁻²² = 0.134×10²² = 13.4×10²⁰ atoms Number of atoms in 306 milligrams of barium is 13.4×10²⁰ atoms |
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