A sample of ethanol C2H6O has a mass of 15.2 g. What amount in moles does this mass represent?

Number of moles = 0.33 mol

Explanation:

Given data:

Mass of C₂H₆O = 15.2 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of 46.07 g/mol

by putting values,

Number of moles = 15.2 g/ 46.07 g/mol

Number of moles = 0.33 mol

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.