Using your answer from the first row of Tablè 5.2, calculate the number of atoms present. in 128g of copper. __

To calculate the number of atoms present in 128g of copper, we need to use the molar mass of copper and Avogadro's number.<br /><br />Step 1: Find the molar mass of copper.<br />The molar mass of copper is 63.55 g/mol.<br /><br />Step 2: Calculate the number of moles of copper.<br />Number of moles = mass / molar mass<br />Number of moles = 128g / 63.55 g/mol<br />Number of moles ≈ 2.01 moles<br /><br />Step 3: Calculate the number of atoms using Avogadro's number.<br />Number of atoms = Number of moles * Avogadro's number<br />Number of atoms = 2.01 moles * 6.022 x 10^23 atoms/mol<br />Number of atoms ≈ 1.21 x 10^24 atoms<br /><br />Therefore, there are approximately 1.21 x 10^24 atoms present in 128g of copper.