What type of chemical reaction is this?

Why are people not able to scuba dive in the deep part of the ocean

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?