Chemistry(URGENT, PLEASE HELP!)

posted by .

the volume of alcohol present in 620 mL of a 40% (v/v) solution of alcohol is ______?
A. 372 mL
B. 40 mL
C. 248 mL
D. 580 mL

  • Chemistry(URGENT, PLEASE HELP!) -

    What's the definition?
    (volume alcohol/volume solvent)x 100 = 40
    Substitute and solve for volume alcohol.

  • Chemistry -

    Think about what 40% of 620 is, and the URGENCY should go away.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    moonshine has 50 liters of a 70% alcohol solution.how many liters of pure alcohol must be added to obtain an 80% alcohol solution?
  2. Math

    Suppose you have two alcohol+water solutions. One solution ( of volume x liter ) is 45% alcohol, while the second solution (of volume y liter) is 75% alcohol. What values of "x" and "y" (in liters) will fill a total volume of 5.0 liter …
  3. math

    a chemist has a solution that is 20 percent alcohol by volume. which of the following expressions represents the percent of alcohol by volume when m litersof the solution is mixed with h liters of pure alcohol and p liters of water?
  4. Math

    In 500cmcube of alcohol solution the percentage of alcohol by volume is 80%. Find the volume of water that must be added to the solution so that the ratio of the volume of alcohol to that of water becomes 5:2?
  5. math

    An alcohol solution consists of 6 gallons of pure water and x gallons of alcohol, x > 0. Let f(x) be the ratio of the volume of alcohol to the total volume of liquid. [Note that f(x) is the concentration of the alcohol in the solution.] …
  6. math

    An alcohol solution consists of 6 gallons of pure water and x gallons of alcohol, x > 0. Let f(x) be the ratio of the volume of alcohol to the total volume of liquid. [Note that f(x) is the concentration of the alcohol in the solution.] …
  7. Math

    1. In the lab, Deon has two solutions that contain alcohol and is mixing them with each other. Solution A is 40% alcohol and Solution B is 12% alcohol. He uses 1000 milliliters of Solution A. How many milliliters of Solution B does …
  8. algebra

    A laboratory assistant is asked to mix a 30% alcohol solution with 21 liters of an 80% alcohol solution to make a 60% alcohol solution. How many liters of the 30% alcohol solution should be used?
  9. maths

    In the lab, Teresa has two solutions that contain alcohol and is mixing them with each other. She uses 4 times as much Solution A as Solution B. Solution A is 17% alcohol and Solution B is 10% alcohol. How many milliliters of Solution …
  10. Chemistry

    An aqueous solution of ethyl alcohol is made by transfering 1.32 mL of liquid ethyl alcohol to a 50.0 mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the volume/volume percentage of ethyl alcohol …

More Similar Questions