What is the name of this alkane? Two central carbons are bonded to C H 3 at each end, H below, and C H3 above the left carbon and H above the right carbon.

the first alternative is the answer.

Explanation:

first u choose the longest chian. that is the horizontal chain. then u count the carbon number. then u see if there are alkyls the alkyl is methyl. and it is 1. so, you first write the alkyl number (1) then the alkyl name (methyl) then you write the alkane name (butane) because it consists 5 carbons. hope it helped.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.