You have a sample of 23.8 g of C2H6. how many moles of C2H6 are in the sample? Be sure to show your work and each step is writing out clearly.

0.791 moles are present in the sample

Explanation:

To convert mass to moles of a substance you must find the molar mass of the susbtance.

The molar mass of C₂H₆ is:

2C = 12.01g/mol*2 = 24.02g/mol

6H = 1.01g/mol*6 = 6.06g/mol

Molar mass = 24.02g/mol + 6.06g/mol = 30.08g/mol is the molar mass of C₂H₆

And the moles of 23.8g of this substance are:

23.8g * (1mol / 30.08g) =

0.791 moles are present in the sample

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 

Idk the answer sorry