HELP PLS refer to photo
correct answer will be marked as brainliest!

Hi, given below are your answers:-
Blank 1:- 3
Blank 2:- 2-methylpropane
For the first answer, We know that while referring the image compounds, we find that CHCH2CH3. In this, we find that there are 3 carbon- C atoms. Therefore, blank 1 is 3.
For the second answer, We know that the IUPAC name is 2-methylpropane. For this, we have to know the name itself.
Therefore, the above answers are correct and is proved.
Hope it helps you....
( Answered by Benjemin )