To determine the number of grams in 1 mole of sulfuric acid (H2SO4), we need to add the atomic masses of its constituent atoms.

The molar mass of sulfuric acid can be calculated as follows:

- 2 atoms of hydrogen (H): 2 x (1.008 g/mol) = 2.016 g/mol

- 1 atom of sulfur (S): 1 x (32.066 g/mol) = 32.066 g/mol

- 4 atoms of oxygen (O): 4 x (16.000 g/mol) = 64.000 g/mol

Adding these values together, we get:

2.016 g/mol + 32.066 g/mol + 64.000 g/mol = 98.082 g/mol

Therefore, 1 mole of sulfuric acid (H2SO4) weighs approximately 98.082 grams.