Ok so I just started this course and we have to so review from first year stuff but I am completely lost and have no idea how to do the questions. There are a bunch so could someone just run through one with me please? Commercial aqueous nitric acid has a density of 1.42g/mL and is 16.0mol/L HNO_3(aq). Calculate the molality, mass % and mole fraction of the HNO_3 present. I dont understand because I thought there needed to be a solute and a solvent but here it seems like its asking about just one thing.