I do not believe High Yield Investments are worth it. It's a scam that promises large returns on investments by paying previous investors with the money invested by new investors.

The yield for a gallon of product that has a ratio of 1:128?

The percent yield is the ratio of the actual yield to the theoretical yield. A mole ratio is a conversion factor derived from the coefficient of a balanced chemical equation interpreted in terms of moles.

Scotiabank and Standard life investments both offer high yield investing. To find out which one is best for you i suggest you visit your nearest branch.

Not necessarily. Even young people should have a diversified portfolio that includes some conversative investments. Also, be sure to consult a financial advisor. Many claimed "high yield" investments are unsound.