Respiration is the chemical process by which organic compounds release energy. The compounds change into different ones by exergonic reactions. The hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) and phosphoric acid (Pi) releases energy (it is an exergonic reaction).
The half life of sodium -24 is 15 hour.
The duration needed for an amount to decrease to half its original is known as the half-life.
Sodium is a kind of element which has atomic number 11. It has three isotopes.
The radioactive isotope sodium-24, which is employed in blood tests in medicine, degrades through beta decay as well as seems to have an of 15.0 hours.
Therefore, the half life of sodium -24 is 15 hour.
To know more about half life.
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Which equation represents the oxidation half reaction?
(1) Zn(s) + 2e– → Zn2+(aq)
(2) Zn(s) → Zn2+(aq) + 2e–
(3) Cu2+(aq) → Cu(s) + 2e–
(4) Cu2+(aq) + 2e– → Cu(s)
Answer: Option (2) is the correct answer.
Explanation:
Oxidation is the process in which there is loss of electrons or increase in oxidation number of the element.
Whereas reduction is the process in which there is gain of electrons or decrease in oxidation number of the element.
For example,
Oxidation-half reaction:
Reduction-half reaction:
Thus, we can conclude that the given equation Zn(s) → Zn2+(aq) + 2e– represents the oxidation half reaction.
The equation that represents the oxidation half reaction is Zn(s) → Zn2+(aq) + 2e–
Oxidation reaction is the process in which there is loss of electrons or increase in oxidation number of the element.
From all the given half reaction, there is only one reaction with increase in oxidation number;
Zn(s) → Zn2+(aq) + 2e–
Thus, there is increase in oxidation number of 0 to + 2.
Learn more about oxidation number here: brainly.com/question/27239694
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0 atoms of carbon.
c.
6 atoms of carbon.
b.
1 atom of carbon.
d.
12 atoms of carbon.
Answer : The correct option is, (d) 12 atoms of carbon.
Explanation:
The formula of given molecule of table sugar is,
The given molecule is made up of three elements which are, carbon, hydrogen and oxygen.
In the given molecule of table sugar , there are 12 number of carbon atoms, 22 number of hydrogen atoms and 11 number of oxygen atoms.
From the given options we conclude that, the option (d) is the correct option. While the other options are incorrect.
Hence, the correct option is, (d) 12 atoms of carbon.
What name should be used for the ionic compound LiI?
The name that should be used for the ionic compound LiI is Lithium iodide. When naming ionic compounds, you have to take into consideration pairing of two components.
Answer: The given compound is named as lithium iodide.
Explanation:
is an ionic compound because lithium is a metal and Iodine element is a non-metal.
We know that, a bond which is formed between a metal and a non-metal is always ionic in nature.
Ionic bond is formed when there is a complete transfer of electron from an electropositive element (a metal) to an electronegative element (non-metal).
The nomenclature of ionic compounds is given by:
Hence, the name given to will be lithium iodide.
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Sodium is a group 1 element with atomic number 1. It has 11 electrons. It is soft reactive metal. It has 1 valence electron.
Fluorine is a group 7 element, a hologen with 7 valence electron. It is a most reactive non metal.
When sodium react with fluorine, ionic bond is formed in the resulting compound sodium fluoride.
One sodium and fluorine each totaling 2 atoms are enough to make the bond.
As the bond is formed, both atoms have octet structure. That is they each have 8 electrons on their outermost shells.
The positive charge on sodium indicates that sodium had lost 1 electron to fluorine atom.
The negative charge on fluorine ion indicates that fluorine atom had gained 1 electron from sodium atom to form negative ion.
The name of the compound is sodium fluoride with formula NaF.
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