Questions: The density of ethanol is 0.789 g / mL. What is the mass of 750 mL ethanol in grams and kilograms?

Solution Steps

• Density of ethanol: $0.789 \, \text{g/mL}$
• Volume of ethanol: $750 \, \text{mL}$

• Use the formula for mass: $$\text{Mass} = \text{Density} \times \text{Volume}$$
• Substitute the given values: $$\text{Mass} = 0.789 \, \text{g/mL} \times 750 \, \text{mL}$$

• Calculate the mass in grams: $$\text{Mass} = 591.75 \, \text{g}$$

• Use the conversion factor: $1 \, \text{kg} = 1000 \, \text{g}$
• Convert the mass from grams to kilograms: $$\text{Mass} = \frac{591.75 \, \text{g}}{1000} = 0.59175 \, \text{kg}$$

Final Answer