The substance that can be broken down by chemical means from the choices given is <u>CO (Carbon monoxide).</u>
<u>Carbon monoxide</u> is a compound made up of carbon and oxygen and can therefore be broken by chemical means.
<h2>Further Explanation
</h2><h3> Pure substances </h3>
- Pure substances are substances that have a constant composition and also cannot broken down into simpler substances using physical means.
- Pure substances are classified as either elements or compounds.
<h3>Elements
</h3>
- Elements are a type of pure substances that are made up of one type of atom and cannot be broken down into simpler substances by both chemical and physical means.
- Atoms making up a certain element are similar or identical in properties. Examples of elements are, Oxygen, sodium, calcium, etc. Periodic table shows an arrangement of all known elements.
<h3>Compound </h3>
- A compound is a pure substance that is made up of than one type of atoms of different elements and can be broken down into individual elements making it using chemical means.
- Compounds cannot be broken down into simpler substances by physical means but only using chemical means. Compounds have constant composition and therefore they have a constant ratio of elements. For example the ratio of elements making up carbon dioxide is always 27% Carbon and 73% Oxygen.
- Examples of compounds include, water, Ammonia, calcium sulfate, carbon dioxide, etc.
- In our case, Carbon monoxide, (CO) is a compound made up of a carbon atom and an oxygen atom. Other choices, Ca, Ce, and Cu are all elements.
Keywords: Compound, elements, pure substances
<h3>Learn more about:
</h3>
Level: High school
Subject: Chemistry
Topic: Atoms, elements, compounds and mixtures
<u>Given:</u>
MilliMoles of N2 = 2.5 mmol = 0.0025 moles
Initial volume V1 = 42 cm3
Final volume V2 = 600 cm3
Temperature T = 300 K
<u>To determine:</u>
The change in Gibbs free energy, ΔG
<u>Explanation:</u>
The change in Gibbs free energy is related to the ration of the volumes:
ΔG = -nRTln(V2)/(V1)
= -0.0025*8.314*300*ln(600/42) = -16.582 J/mol
Ans: The Gibbs free energy for the process is 0.0166 kJ/mol
(2) polymerization. polymerization<span> is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks.</span>
let the actual height of car be x
now, according to question,
Explanation:
Solubility is determined by the principle , "like dissolves like" .
i.e. , if a compound is polar then it will dissolve in a polar compound only , and
if a compound is non - polar then it will dissolve in a non - polar compound only .
Hence , from the question ,
Water is a polar molecule , and hence it will dissolve only the polar molecule , i.e. , from the given options the polar molecule is , iii. K₂SO₄
Hexane , is a non - polar molecules , hence it will dissolve only the non polar molecule , i.e. , from the given options the non polar molecule is i. Butane .
