Final answer:
The density of ethanol with the given mass of 75.0 g and volume of 95.0 mL is calculated to be 0.7895 g/mL, which is very close to the commonly reported density of ethanol at 20°C.
Step-by-step explanation:
The density of a substance is defined as its mass per unit volume. For a sample of ethanol with a mass of 75.0 g and a volume of 95.0 mL, the density can be calculated using the formula:
Density = Mass / Volume
Insert the values into the formula to find the density:
Density = 75.0 g / 95.0 mL = 0.7895 g/mL
Since the student is asking for the density at 20°C, this calculation coincides nicely with the known density of ethanol at the same temperature, which is commonly reported as 0.7893 g/mL. The slight difference might be due to experimental errors or variations in the sample.