Soru
Using your answer from the first row of Tablè 5.2, calculate the number of atoms present. in 128g of copper. __
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Cevap
To calculate the number of atoms present in 128g of copper, we need to use the molar mass of copper and Avogadro's number.Step 1: Find the molar mass of copper.The molar mass of copper is 63.55 g/mol.Step 2: Calculate the number of moles of copper.Number of moles = mass / molar massNumber of moles = 128g / 63.55 g/molNumber of moles ≈ 2.01 molesStep 3: Calculate the number of atoms using Avogadro's number.Number of atoms = Number of moles * Avogadro's numberNumber of atoms = 2.01 moles * 6.022 x 10^23 atoms/molNumber of atoms ≈ 1.21 x 10^24 atomsTherefore, there are approximately 1.21 x 10^24 atoms present in 128g of copper.