science

posted by .

what is the mass of a 257 mL sample of ethanol (ethyl alcohol) at 20 centigrade ? The density of ethanol at 20centigrade is 0.789 g|mL .

  • science -

    They tell you the density at the temperature in question.

    Mass is density times volume. Have you learned that yet?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    What is the mass/vol % ethanol in an ethanol-water solution with density of 0.875 g/ml and containing 65.0% ethanol by volume?
  2. Chemistry

    Listerine mouthwash has 21.6% ethyl alcohol by volume. What mass of ethanol is contained in 20.0 mL of mouthwash ?
  3. Chemistry

    At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O?
  4. Science

    Ethanol (grain alcohol) has a density of 0.789 grams per centimeter cubed, How many cubic centimeters of ethanol must be poured into a graduated cylinder to equal 30.3 grams?
  5. Chemistry

    Mass of unknown solution=25.671 Mass ethanol =8.243 Assuming that prior experiments have shown the single-step extraction removes only 72.0 % of the ethanol, the mass of ethanol in your original unknown is 11.45 Mass percent ethanol …
  6. chemistry

    Listerine mouthwash is 21.6%ethyl alcohol by volume. What mass of ethanol is contained in 20.0 mL of mouthwash?
  7. math

    what is the mass of 1.00 L of ethanol? Ethanol has a density of 0.798 g/ml. (hint: one liter is 10^3 mL.) A. 0.789 g B. 789 g C. 789 L I think C
  8. Science

    The density of ethanol is 0.789 g/cm3 at 20 degrees celsius. What is the mass of 150cm3 of this alcohol?
  9. AP Chemistry

    Listerine mouthwash is 21.6% ethyl alcohol by volume. What mass of ethanol is contained in 20.0 mL of mouthwash?
  10. chemistry

    A 52.3 kg sample of ethanol is needed for a reaction. What volume in liters of ethanol should be used?

More Similar Questions