An unknown compound is found to burn in oxygen. When bromine is added to this unknown, the solution remains orange. What can be said about the unknown compound?

What can you reasonably predict to occur when elemental bromine is added to a solution containing the iodide ion? Write chemical equations as part of your explanation.

In the laboratory you are given the task of separating Ag* and Fe* ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" yes Y or N Reagent Formula of Precipitate if YES 1. HBr 2. K2SO4 3. КОН

Imagine you were working as a laboratory technician and your principal investigator asked you to develop Benedict’s test into a quantitative measure of the concentration of reducing sugar in a solution. To do this, you would first need to decide what to measure and then establish the relationship between your measurements and different concentrations of reducing sugars. Explain generally what you would decide to measure and how you would go about determining the relationship of your measurements to the concentration of reducing sugar.