A sample of an unknown gas is found to have a density of 1.40 g/L at a pressure of 0.574 atm and a temperature of 47 °C. Assume ideal behavior. The molar mass of the unknown gas is
g/mol.

Your question is not clear but if you can explain yourself i would be glad to .  just trying to : ))

It can be classified based on its

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.