Question

What mass of nitrogen are there in 50.0g samples of sodium nitrate ($NaNO_2$)?
A. $5$
B. $25$
C. $50$
D. $75$

Answer 1

Hint: Isomers are the identical molecules which have the same numbers of atoms of each element but distinct arrangements of atoms in space. All the different amounts of carbons have different numbers of Isomers.

Complete step by step answer:
Here given that the number of carbon atoms is 10. Decane is an alkane hydrocarbon. The chemical formula $C_{10}H_{22}$ In a Decane, there are 10 carbons and 22 hydrogens are present.
Decane is a hydrocarbon chain containing 10 carbons and the last 2 carbons have 3 hydrogens atoms. All other carbons have 2 hydrogens atoms in order to form a neutral and stable compound.
It can be rearranged in 75 ways, as one carbon moves the three carbons to the 2 carbons of the chain in V shape. In this way there can be arranged 75 isomers of the decane.

There are few isomers of decane are as follows:
Decane
2- Methylnonane
3- Methylnonane
2,2- Dimethyloctane
2,3- Dimethylocatne
2,4- Dimethylocatne

And so on, in this way we can create all the isomers of the Decane.

So, the correct answer is Option D.

Note: Isomers can be categories in two ways:
1.Structural Isomerism:
If the physical and chemical properties of isomers are changed according to the structure then it is known as Structural Isomers.
2.Stereoisomers:
If the physical and chemical properties of isomers are changed according to the Spatial then it is known as stereoisomers.
Before creating isomers of any hydrocarbon need to know all the types of hydrocarbons and the numbers of carbon in all types of hydrocarbons.