Yasha

Most popular questions and responses by Yasha
  1. chemistry

    If all the energy obtained from burning 1.23 pounds of propane (fuel value is 11.09 kcal/g) is used to heat 125.0 kg of water at an initial temperature of 21.8 °C, what is the final temperature? Hint: The heat, q, released by burning propane is absorbed

    asked on March 25, 2012
  2. Chemistry

    At constant pressure, which of these systems do work on the surroundings? Check all that apply. A(s) + 2B(g) ---> C(g) 2A(g) + B(g) ---> 4C(g) A(g) + 2B(g) ---> 2C(g) A(s) + B(s) ---> C(g)

    asked on March 23, 2012
  3. calculus

    Interference Two identical tuning forks are struck, one a fraction of a second after the other. The sounds produced are modeled by f1(t) = C sin(wt) and f2(t) = C sin(wt + Alpha). The two sound waves interfere to produce a single sound modeled by the sum

    asked on April 15, 2012
  4. PLZ ANSWER THIS!!!! QUICK

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked on October 16, 2008
  5. HELP WITH ALGEBRA!!!!!!!

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked on October 16, 2008
  6. algebra

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked on October 16, 2008
  7. algebra

    use factoring and the zero-product property to solve 4a^2-11a+6=0 9r^2-30r+21=-4

    asked on December 19, 2012
  8. MATH

    how do u find the area of a quadrilateral?

    asked on October 16, 2008
  1. Chemistry

    Thank you so very much~!

    posted on March 23, 2012
  2. probability

    3 out of 11

    posted on October 16, 2008
  3. Biology

    fungi

    posted on October 16, 2008
  4. Algebra 1

    subtract 8 from 3 then add two to that answerthen divide by 3. then u will get x

    posted on October 16, 2008
  5. english

    No

    posted on October 16, 2008