I believe it is a compound, seeing as compounds are basically different types of elements, only combined into one single compound. Please tell me if i'm wrong?
Answer: During a phase change, such as melting or boiling, the kinetic energy increases.
Explanation:
Kinetic energy is the energy obtained by the molecules of a substance due to their motion.
When phase change such as melting or boiling takes place then it means heat is absorbed by the substance. As a result, their molecules more even more rapidly from one place to another due to which more number of collisions take place.
Hence, a change in phase of substance occurs as kinetic energy increases in melting or boiling process.
Thus, we can conclude that during a phase change, such as melting or boiling, the kinetic energy increases.
To solve this we use the
equation,
M1V1 = M2V2
where M1 is the concentration of the stock solution, V1 is the
volume of the stock solution, M2 is the concentration of the new solution and
V2 is its volume.
2 M x V1 = 1.50 M x 100 mL
<span>V1 = 75 mL of the 2 M KNO3 solution</span>
The electron configuration of alkali metals would then resemble those of group 17 of the periodic table in the compounds they form.
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What is periodic table?</h3>
Periodic table is defined as a tabular approach of showing the items so that they appear in the same vertical column or group when their attributes are similar. Phosphorus is the oldest chemical element, and hassium is the newest. Please take note that, unlike in the Periodic system, the elements do not exhibit their natural relationships with one another.
The elements that make up group 17 of the periodic table are the halogens. They are nonmetals that are reactive, such as iodine, bromine, chlorine, and fluorine. Halogens are non-metals that are very reactive. These substances share a lot of characteristics with one another.
Thus, the electron configuration of alkali metals would then resemble those of group 17 of the periodic table in the compounds they form.
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To learn more about periodic table, refer to the link below:
brainly.com/question/11155928
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<span>14 oxygen molecules
First, count the number of carbon and hydrogen are in the original molecule of c9h20
9 carbon.
20 hydrogen.
Each carbon atom will make 1 molecule of CO2 and will require 2 oxygen atoms per molecule, so multiply 9 by 2 to get the number of oxygen atoms needed.
9 * 2 = 18
It takes 2 hydrogen atoms to make a water molecule and it takes 1 oxygen atom. So divide the number of hydrogen atoms by 2 to get the number of water molecules you can make.
20 / 2 = 10
So you need a total of 18 plus 10 oxygen atoms giving a total of 18+10 = 28 oxygen atoms.
But you don't want to know the number of oxygen atoms, you want to know the number of oxygen molecules. Since there's 2 oxygen atoms per oxygen molecule, just divide by 2. Giving 28 / 2 = 14
Therefore you need 14 oxygen molecules for full combustion of 1 C9H20 molecule.</span>
