Question

The density of ethanol is 0.789 g/ml at 20 degrees celsius what is the mass of 80.0 ml of ethanol at 20 degrees celsius

Answer 1

The mass of 80.0 ml of ethanol at 20 degrees Celsius is approximately
`\( \text{0.789 g/ml} * \text{80.0 ml} = \text{63.12 g} \).`

Step-by-step explanation:

The density of a substance is defined as its mass per unit volume. In this case, the density of ethanol is given as
`\( \text{0.789 g/ml} \)`at 20 degrees Celsius. To find the mass of a given volume of ethanol, we can use the formula:

`\[ \text{Mass} = \text{Density} * \text{Volume} \]`

Substituting the provided values into the formula, we get
`\( \text{Mass} = \text{0.789 g/ml} * \text{80.0 ml} = \text{63.12 g} \)`. Therefore, the mass of 80.0 ml of ethanol at 20 degrees Celsius is approximately 63.12 grams.

It's important to note that the units in the calculation are consistent – both the density and volume are given in grams per milliliter and milliliters, respectively, resulting in the mass being in grams. This ensures the accuracy of the calculation and the meaningful interpretation of the final result. Therefore, the mass of the given volume of ethanol is 63.12 grams at the specified temperature.