Final answer:
The mass of 25 moles of silicon dioxide (SiO₂) is 1502.25 g.
Step-by-step explanation:
To calculate the mass of 25 moles of silicon dioxide (SiO₂), we need to determine the molar mass of SiO₂ and then multiply it by 25 moles.
The molar mass of SiO₂ can be calculated by adding the atomic masses of silicon (Si) and oxygen (O). The atomic mass of Si is 28.09 g/mol and the atomic mass of O is 16.00 g/mol. Since there are 2 oxygen atoms in SiO₂, the molar mass of SiO₂ is:
Molar mass of SiO₂ = (28.09 g/mol) + (2 * 16.00 g/mol) = 60.09 g/mol
Therefore, the mass of 25 moles of SiO₂ is:
Mass = (25 moles) * (60.09 g/mol) = 1502.25 g