hydrochloric acid is added to magnesium and to soidum carbony in separte test wich row shows observations

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

Name atleast 3 type of energy associated with the microwave