Answer:
magnesium + oxygen ----> magnesium oxide
A. The wings are analogous structures that evolved differently and do not have a similar internal structure.
answer:
1) reaction is exothermic
2) some bonds are broken and some are formed (see explanation below)
Explanation:
When energy is written on the product side of a chemical reaction, means that the energy is appearing as consequence of the reaction, that is a released energy (heat) that heats the surroundings.
This kind of reaction where heat is released and, as a consequence, the temperature of the surroundings increase, is called exothermic.
In every chemical reaction some bonds are broken and others are formed.
Breaking bonds requires energy.
Forming bonds release energy.
The energy written on the chemical reaction is a net change of energy: the bonds broken on the reactant side used energy and bonds formed on the products side released energy.
When the energy released by the formation of the product is greater than the energy of the bonds broken on the reactant side, the chemical reaction is exothermic.
Answer:
Enantiomers are the non-superimposable mirror images of each other.
Diastereomers are the stereisomers that are not a reflection or mirror images of each other.
Explanation:
Stereoisomers are the chemical molecules having the same molecular formula and bond connectivity but different arrangement of atoms in space.
Stereoisomers are of two types: Enantiomers and Diastereomers
Enantiomers are the non-superimposable mirror images of each other. Enantiomers are also called optical isomers.
Diastereomers are the stereisomers that are not a reflection or mirror images of each other. Diastereomers include E-Z isomers, cis–trans isomers, meso compounds, non-enantiomeric optical isomers.