[Zookid239]

One molecule has HC triple bonded to a carbon that is single bonded on the other side to another carbon with 3 single bonds to 3 CH3 molecules. The second molecule has a carbon atom single bonded to 3 H atoms and another carbon atom which is single bonded to 3 CH3 molecules. Is the single bond between the C atom triple bonded to HC and the C atom single bonded to 3 CH3 molecules shorter and stronger than the single bond between the C bonded to two sp3 carbon atoms?

[Corribus]

First, it would be helpful if you drew the molecule using SMILES, used an appropriate compound name, or uploaded a drawing. That way it is easy to know what molecule you are talking about.

Second, it is a forum policy that you have to show or describe your work to receive help.

[Vidya]

One molecule has HC triple bonded to a carbon that is single bonded on the other side to another carbon with 3 single bonds to 3 CH3 molecules. The second molecule has a carbon atom single bonded to 3 H atoms and another carbon atom which is single bonded to 3 CH3 molecules. Is the single bond between the C atom triple bonded to HC and the C atom single bonded to 3 CH3 molecules shorter and stronger than the single bond between the C bonded to two sp3 carbon atoms?

Yes it is correct.
sp3 C  bonded to sp3 carbon is longer and weaker than sp carbon bonded to sp3 carbon.
Remember size of orbitals decreases in this order.- sp carbon < sp2 carbon < sp3 carbon