If a sample of magnesium has a mass of 60.0 g, how many moles of magnesium does the sample contain

 the moles  of magnesium does  the sample contain  is  2.469  moles

calculation

moles    of Mg= mass  of Mg /molar mass  of Mg

mass  of Mg = 60.0 g

From periodic table, the molar  mass  of  Mg =24.3 g/mol

The moles of  mg  is therefore=  60.0 g / 24.3 g/mol = 2.469 moles

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