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