[tex] \boxed{ \boxed{ \bf{Solution : }}}[/tex]
First of all,
Molar mass of C2H6 = Mass of C × 2 + Mass of H × 6
= 12 × 2 + 1 × 6
= 24 + 6
= 30 g/mol or 30 u
Now,
1 mole of C2H6 atoms = 30
5.90 moles of C2H6 atoms = ( 30 × 5.90 )
= 177 g
Thus,the mass of 5.90 moles of C2H6 atoms is 177 grams.
