What is the molar mass of
CH4?
(C = 12.011 amu, H = 1.008 amu)

16.0 g/mol (3 s.f.)

Explanation:

Molar mass is the mass of a mole of substance.

1 mole of CH₄ has 1 C atom and 4 H atoms.

Since the molar mass is numerically equal to the molecular mass of a compound, let's find the molecular mass of CH₄ first.

Molecular mass= sum of all the atomic mass in a molecule

Molecular mass of CH₄

= 12.011 amu +4(1.008 amu)

= 16.043 amu

Thus the molar mass of CH₄ is 16.043g/mol, or 16.0g/mol to 3 significant figures.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be