1. Assume this experiment (after the extractions are complete) left you with 4 pure products (aspirin, acetaminophen and caffein
1 answer:
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The balanced chemical equation representing the process of photosynthesis is:
The reactants in the process of photosynthesis are and H
and the products of the reaction are glucose
and oxygen
. Oxygen is the nonpolar covalent gas which is released in the process of photosynthesis. The reactant
is a nonpolar covalent gas while the other reactant water
has polar covalent O-H bonds.
In the balanced chemical equation, the number of each type of element must be equal on both sides of the reaction.
Answer:
That iron atom is oxidized. It loses two electrons.
Explanation:
Compare the formula of an iron atom and an iron(II) ion:
- Iron atom:
;
- Iron(II) ion:
.
The superscript in the iron(II) ion is the only difference between the two formulas. This superscript indicates a charge of
on each ion. Atoms and ions contain protons. In many cases, they also contain electrons. Each proton carries a positive charge of
and each electron carries a charge of
. Atoms are neutral for they contain an equal number of protons and electrons.
Protons are located at the center of atoms inside the nuclei. They cannot be gained or lost in chemical reactions. However, electrons are outside the nuclei and can be gained or lost. When an atom loses one or more electrons, it will carry more positive charge than negative charge. It will becomes a positive ion. Conversely, when an atom gains one or more electrons, it becomes a negative ion.
An iron atom will need to lose two electrons to become a positive iron(II) ion
with a charge of
on each ion. That is:
.
- Oxidation is Losing one or more electrons;
- Reduction is Gaining one or more electrons.
This definition can be written as the acronym OILRIG. (Khan Academy.)
In this case, each iron atom loses two electrons. Therefore the iron atoms here are oxidized.