Respuesta :

answer: 2.55 moles of H2O

you multiply the given amount of H2O in grams by the ratio of 1 mole of H2O to the grams of H2O, which is the molar mass (g/mol) of H2O

45.9 g H2O times (1 mole/18.015 g H2O) = 2.55 moles of H2O

Answer:

The answer is 2.55

Explanation: