Add spaces: Grade/ClassVIcanbedescribedasextremelysevereoralmostunrunnablewhitewater,consideredalmostcertaindeath,suchasNiagaraFalls.

Answer: Grade/Class VI can be described as extremely severe or almost unrunnable whitewater, considered almost certain death, such as Niagara Falls.

Add spaces: TypicalValuesPer100g

Answer: Typical Values Per 100g

Add spaces: TheRheingauisdevelopedforthedisabled.

Answer:
The Rheingau is developed for the disabled.