A chemist will use a sample of 30 g of ethanol (CH_{3}CH_{2}OH) in an experiment. In one to two sentences, make and justify a claim about the number of moles of ethanol the chemist will use.

Question

Element | Molar Mass (g/mol)
carbon | 12.01
Hydrogen | 1.01
oxygen | 16.00

Answer 1

The chemist will be using approximately 0.76 moles of ethanol in the experiment, as calculated by dividing the mass of ethanol by its molar mass. This calculation is necessary to accurately measure and analyze the amount of ethanol used in the experiment.