Abuffer contains significant amounts of acetic acid and sodium acetate. part a write an equation showing how this buffer neutralizes added acid (hno3).

If a strong acid is added to a buffer, the conjugate base of buffer will reacts with the H⁺ from the strong acid to form the weak acid. The H⁺ gets absorbed by the CH₃COO⁻ instead of reacting with water to form H₃O⁺ so the pH will remain constant, The equation is:
CH₃COO⁻ + HNO₃ → CH₃COOH + NO₃⁻
                     S.A               W.A
Buffer converts strong acid to weak acid

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