1. Find the molar mass of water (H₂O):
* Hydrogen (H) has a molar mass of approximately 1 g/mol.
* Oxygen (O) has a molar mass of approximately 16 g/mol.
* Molar mass of H₂O = (2 * 1 g/mol) + (1 * 16 g/mol) = 18 g/mol
2. Calculate the mass of 2 moles:
* Mass = (number of moles) * (molar mass)
* Mass = (2 moles) * (18 g/mol) = 36 grams
Therefore, the mass of 2 moles of water is 36 grams.
