Draw the following isomers of the alkanes of molecular formula C-H16 a. One with ONE tertiary and ONE quaternary carbon.
b. Two with TWO tertiary carbons.
c. One with ONE tertiary and THREE secondary carbons

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?