Question

What is the mass in grams of 5.90 mol of C2H6​

Answer 1

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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.