Answer: Option (c) is the correct answer.
Explanation:
Thermal conductivity is defined as the ability of a substance to transfer heat.
Also, it is known that metals are good conductors of heat and electricity. Therefore, they show high thermal conductivity.
Whereas non-metals are bad conductors of heat and electricity. Hence, they have poor thermal conductivity. Therefore, antimony and carbon will have less thermal conductivity.
On the other hand, thermal conductivity value of sodium is 140 W/(m k) and gallium is 29 W/(m k).
Thus, we can conclude that out of the given options sodium element is likely to have the highest thermal conductivity.
The boiling point of HBr is -66 (c)
The correct answer should be
<span>At dynamic equilibrium, the rates of forward and reverse reactions are equal.
The chemicals keep exchanging but the rates are the same which means that the chemicals move at an equal rate.</span>
<h3>
Answer:</h3>
- They show the elements of make up a compound
- They show the types of atoms that make up a molecule
- They show the number of each type of atom in a molecule
<h3>
Explanation:</h3>
To answer this question we need to know what is a compound.
- A compound is a substance that is made by two or more atoms of different elements that are chemically combined.
- A chemical formula of a compound is a formula that shows the elements that make up a compound and also the types of atoms that make up the molecule.
- Additionally, the chemical formula shows the number of each type of atom in a molecule.
- In this case, the chemical formula of a molecule of H₂O shows that it is made up of one hydrogen atom and two oxygen atoms.