Final answer:
To find the mass of 2.40 moles of Al(OH), multiply the number of moles by its molar mass, which is 43.99 g/mol. The mass of 2.40 moles of Al(OH) is 105.576 g.
Step-by-step explanation:
To find the mass of 2.40 moles of Al(OH), we need to multiply the number of moles by the molar mass of Al(OH). The molar mass of Al(OH) can be calculated by adding the atomic masses of aluminum (Al), oxygen (O), and hydrogen (H), which are 26.98 g/mol, 16.00 g/mol, and 1.01 g/mol, respectively. Since there are 1 Al, 1 O, and 1 H in Al(OH), the molar mass is 26.98 + 16.00 + 1.01 = 43.99 g/mol.
Now, to find the mass of 2.40 moles of Al(OH), we multiply the number of moles by the molar mass:
Mass = 2.40 moles × 43.99 g/mol = 105.576 g