Which of the following shows examples of things that convert chemical energy to mechanical energy? a toaster and fan b fan and microwave oven c airplane and human body d micvrowave oven and blender

C. Airplane and human body.

Explanation:

Chemical energy is a type of energy that is stored in the bonds of chemical compounds, such as atoms and molecules. The release of energy (a chemical reaction) transforms the substance into a completely new one. This is what happens with food after we eat it. Mechanical energy, on the other hand, is the sum of kinetic and potential energy in an object that is used to do a particular work.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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~ trueboss72

im pretty sure its b