Distinguish between elements, compound and mixture

When the volume and number of particles of a gas are constant which of the following is also constant

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.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years