A3.585 g sample contains carbon, 1.388 g of h, 1.850 g o, and the molar mass is 62.00 g. what is the molecular formula for this substance?

The question provides the masses of each atom in the molecule. To determine the molecular formula, we must first convert each mass into the amount of moles. However, the numbers are mixed up in the question. The correct values should be:

1.388 g of carbon, 0.3585 g of hydrogen and 1.850 g of oxygen.

1.388 g C / 12.01 g/mol = 0.1156 moles C

0.3585 g H/ 1.008 g/mol = 0.3557 moles H

1.850 g O/ 15.99 g/mol = 0.1156 moles O

If we divide every value by the lowest number, so 0.1156, we get:

0.1156/0.1156 = 1 C
0.3557/0.1156 = 3 H
0.1156/0.1156 = 1 O

We now have a formula of CH3O. However, this only has a molecular weight of 31 g/mol, but we are told the molecular weight is 62 g/mol. Therefore, we just multiply the number of each atom by 2 giving us the following molecular formula:

C2H6O

The answer is true for your question.

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