Final answer:
The density of the ethyl alcohol sample is 0.783 g/mL.
Step-by-step explanation:
To calculate the density, we use the formula: density = mass/volume. In this case, the mass is given as 23.71002 g and the volume is given as 0.03020 L. Substituting these values into the formula, we get density = 23.71002 g / 0.03020 L = 783.145 g/L. Rounding to the nearest thousandth, the density is 0.783 g/mL.