What is used to measure solution concentration in chemistry

What produces wave a)sound b) heats c)transfer of energy d)vibrations

How can the periodic table be used to predict the behavior of elements?

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?