First post here, so I wanted to say hello first of all. Must admit this board seems quite helpful. Anyways, here's my problem I'm having issues with, any help would be great. Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in one liter (1.00x10^-3) of water? (b) What is the net charge of all these electrons? I'm not even sure where to get started which is my main problem. Thanks again.