isobutyl tert pentyl acetylene has how many hyrogen atoms?

iso=2 butyl=4 tert=4 pentyl=5 acetylene=2
28 h atoms?
can you please teach me how to compute hydrogen atoms..
Neoheptane has how many atoms?

It's tough to do on the web. The easiest way is to draw out the acetylene, add the isobutyl and tert pentyl groups (you don't have numbers telling you where to put those groups), then add H atoms to each C to make four bonds total. Then count the H atoms.