Asample of a compound contains 32.0g c and 8.0g h. it’s molar mass is 30.0/mol. what is the compounds molecular formula?

 
Given mass of C is 32.0 grams
Given mass of H is 8.0 grams
Molar mass of C is 1212 g/mol 
Molar mass of H is 1.01 g/mol

Thus
32.0 grams of C 8.0 grams of H →3212=2.66 moles of C→81.01=7.92 moles of H32.0 grams of C →3212=2.66 moles of C8.0 grams of H →81.01=7.92 moles of H

When we divide 7.92 by 2.66 we obtain 2.977 which is approximately 3. This means that the ratio of atoms of CC to the atoms of HH is 1:3.

Thus, empirical formula for the compound is CH3CH3.

Molar mass of CH3CH3 is 1⋅12+3⋅1.01=15.031⋅12+3⋅1.01=15.03. Since molar mass of the compound we have to find is 3030 g/mol we have tu multiply subscripts by 2.

Thus, final compound is C2H6C2H6.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

A) the enthralling of formation for pure element in its standard state is always positivehope this : )