I am doing triple science edexcel for my gcses and i got a new teacher (a bad one really) after christmas. She is teaching us about Faraday's constant and charge calculations in electrolysis, but it's not in any textbook or the spec! She claims that it is "hidden within the spec" (whatever that means...). Is my chemistry teacher teaching us what we need to know? Does anyone know if this is actually in the spec or is she just being a bad teacher?