You have 114.0 g-moles of cumene. How many g are in the sample?

13701.66 g

Explanation:

Moles is denoted by given mass divided by the molecular mass,

Hence,

n = w / m

n = moles,

w = given mass,

m = molecular mass.

From the question,

114.0 g-moles of cumene means,

Moles of cumene = 114.0 g-mol

The Chemical formula of cumene = C₉H₁₂

As we know the molecular mass of cumene = 120.19 g / mol

using the above formula,

n = w / m

w = n * m

Putting the corresponding values -

w = (114.0 g-mol) * 120.19 g / mol

w = 13701.66 g