A chemist will use a sample of 30 g of ethanol (CH3CH2OH) in an experiment. In one to two sentences, make and justify a claim about the number of moles of ethanol the chemist will use.

The chemist will use approximately 0.67 moles of ethanol in the experiment, as the molar mass of ethanol is 46.07 g/mol. This calculation is derived from dividing the given mass of ethanol (30 g) by its molar mass.