Given the reaction 2naoh + h2so4 = na2so4 + 2h2o, what is the total number of grams of naoh needed to react completely with 196 grams of h2so4

2moles of naoh react with 1 mole of h2so4
therefore x moles will react with 196 moles (moles can interchange with grams over here)
196 x  2= 392
so 392 grams of naoh will be required to react completely with 195 gram of h2so4

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 

  super sorry but i dont know lo