The molecule with same molecular formula but different arrangement of atoms is said to be an isomer.
When 2,2-dimethylbutane reacts with chlorine in the presence of light gives three isomers that is 
(3-chloro-2,2-dimethylbutane), 
(1-chloro-2,2-dimethylbutane) and 
(1-chloro-3,3-dimethylbutane).
In above case, the molecular formula of all isomers are same i.e.
but chlorine is arranged in different positions of carbon. Thus, results isomers.
The reaction is shown in the image.
B chemical properties is a right answer
At STP, it is at 273 K and 1.00 atm.
Use PV=nRT to and solve for n (number of mol of N2)
1.00 atm • 4.40L / 0.08206 Latm/molK • 273 K = 0.196 mol N2
There are two mol of N2 for every two mol of NH4NO2 (the number of mol of both are equal)
Find the molar mass of NH4NO2 = 64.1 g
Multiply the number of mol by the molar mass
0.196 mol • 64.1 = 12.6 g NH4NO2
The features that can be observed from a substance that undergoes a chemical change is that the shape is altered. That is option D.
<h3>What is a chemical change?</h3>
A chemical change is the change in which two or more chemical substances involved in a chemical reaction rearranges their chemical bonds to form a new product.
In the chemical change, the shape of an object can be changed and the object will still remain true to its chemical composition.
Therefore, the features that can be observed from a substance that undergoes a chemical change is that the shape is altered.
Learn more about chemical reaction here:
brainly.com/question/11231920
#SPJ1
Carbon can be used in fuel
