Question

How many grams are in 5.90 moles of C8H18?

Answer 1

Mass =672.6 g

Further explanation

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

`\tt mol=(mass)/(MW)`

MW = molecular weight

MW C₈H₁₈ = 8x12 + 18 x1 = 114 g/mol

mass:

`\tt mass=mol* MW\\\\mass=5.9* 114=672.6~g`