Metalloids are useful as semiconductors in modern electronics, like smartphones. which feature of a smartphone is made possible by metalloids? a. touchscreen b. ability to vibrate c. small size d. long battery life

I think the correct answer from the choices listed above is option C. The feature of a smartphone that is made by metalloids would be the small size. Metalloids are used as semiconductors which can be in small sizes that makes phones handy. Hope this answers the question. Have a nice day.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic