In this equation, which substance is a Brønsted-Lowry base? LiOH(aq) →Li+(aq) +OH-(aq) none of these OH- Li+ LiOH H2O In this equation, which substance is the stronger Brønsted-Lowry acid? CH3COOH(aq) + NH3→NH4+(aq) +CH3COO-(aq) NH4+ CH3COO- CH3COOH NH3 none of these

The answer is b because a,c,and d are opinons

Visible light is located in the middle of the spectrum.

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.