The correct answer is Sulfur Hexafluoride
it’s an inert gas that is known to be six times heavier than the air we breathe. While Helium being lighter makes our voice higher, SF6 makes our voice deeper. The sound travels slower in denser gases which is why our voice will come out deeper and rather slow.
The theoretical yield is the reaction yield that measures the product of the reaction from the conversion of the limiting reagent. The theoretical yield is 160 gm.
<h3>What is mass?</h3>
Mass or the theoretical yield is the result of the multiplication of mole and the molar mass of the compound.
The reaction between hydrogen and oxygen is shown as,

Moles of water is calculated as:

The theoretical yield of water is calculated as:

Therefore, option D. 160 gm is the theoretical yield of water.
Learn more about theoretical yield here:
brainly.com/question/918691
<span>D. all of the above because ionic compound is a salt. it is also held together by ionic bonds. it has anions and cations </span>
The type of structural isomerism arises when a particular ligand is capable of coordinating to a metal in two ways is linkage isomer.
<h3>What are structural isomerism?</h3>
Structural isomerism is a kind of isomerism in which molecular formula of the compound is same but they all have different arrangement of atoms or bonding in them.
If in any compound particular ligand is attached to the metal through different sides of the compound, then the product which is formed by these arrangement is known as linkage isomers.
Example of the linkage isomer is attached below.
Hence, the required isomerism is linkage isomerism.
To know more about structural isomerism, visit the below link:
brainly.com/question/15183293
#SPJ4