Most popular questions and responses by re
  1. chemistry

    A saturated solution was formed when 4.48×10−2 L of argon, at a pressure of 1.0 atm and temperature of 25 C, was dissolved in 1.0 L of water. Calculate the Henry's law constant for argon in mol/atm. I got an answer of 1.4*10^-3, maybe my units are

    asked on September 17, 2009
  2. math

    What is the third quartile, Q3, of the following distribution? 10, 25, 18, 31, 16, 27, 5, 13, 32, 24, 15, 21, 18, 18, 24, 4, 8, 11, 11, 23

    asked on February 26, 2013
  3. Chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at

    asked on September 17, 2009
  4. Physics

    Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1490 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out

    asked on September 10, 2009
  5. chemistry

    rank the following ionic compounds in order of increasing lattice energy NaF, Csl, CaO

    asked on March 3, 2011
  6. math

    Graph the equation in the rectangular coordinate system. -5y = -40 How should the line be going?

    asked on February 9, 2010
  7. geometry

    Three interior angles of a quadrilateral have measures of 52∘, 53∘, and 154∘. Find the fourth angle measure.

    asked on December 17, 2015

    Suppose that 1.01g of rubbing alcohol(C3H8O) evaporates from a 56.0g aluminum block. If the aluminum block is initially at 25'C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the

    asked on September 6, 2009
  9. chemistry

    How much energy is released when 48.5 g of water freezes?

    asked on September 6, 2009
  10. Chemistry

    A solution containing 26.40 mg of an unknown protein per 22.5 mL solution was found to have an osmotic pressure of 3.95 torr at 21 C. What is the molar mass of the protein?

    asked on September 17, 2009
  11. physics

    The drawing shows a force vector vector F that has a magnitude of 600 newtons. It lies at alpha = 67° from the positive z axis, and beta = 31° from the positive x axis. (that's the diagram given) webassign. (delete this space) net/CJ/p1-39alt.gif (a)

    asked on September 10, 2009
  12. Math

    An instructor gives regular 20-point quizzes and 100-point exams in a mathematics course. Average scores for six students, given as ordered pairs (x,y) where x is the average quiz score and y is the average test score, are (18, 87), (10, 55), (19, 96),

    asked on March 7, 2011
  13. math

    There are 5 options on the dessert menu at a restaurant. Erin and Ellen like all of the choices equally, so they each choose a dessert at random from the menu. What is the probability that Erin will choose apple pie and Ellen will choose strawberry

    asked on April 24, 2013
  14. chemistry

    what would be the vapor pressure of water in a solution wiith 23.7g NaCl dissolved in 500mL of water at 50degrees centigrade

    asked on September 22, 2011
  15. algebra 2

    Solve the problem. The growth in the population of a certain rodent at a dump site fits the exponential function A(t)= 164e0.032t, where t is the number of years since 1975. Estimate the population in the year 2000.

    asked on July 12, 2011
  16. Physics

    It takes 180 kJ of work to accelerate a car from 21.0 m/s to 27.5 m/s. What is the car's mass? kg?

    asked on October 26, 2009
  17. physics

    A hot-air balloon is rising upward with a constant speed of 2.95 m/s. When the balloon is 3.30 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

    asked on September 14, 2009
  18. math

    how long does the equation od pi go on?

    asked on November 3, 2010
  19. Math

    -2/5 x -1 1/4 I'm confused on how to solve this. can someone help?

    asked on October 16, 2017
  20. algebra/math

    Jamal is in charge of 3 lemonade stands at Summer Fun Day. He has 4 pitchers that will hold 9, 5,4 and 2 quarts. The largest pitcher is filled with lemonade, and the others are empty. How can Jamal use the pitchers to be sure he has pitchers with 3 quarts

    asked on November 13, 2014
  21. algebra

    maddie has 13-, 5-, 4-, and 2-liter pitchers. If she starts with the 3 smaller pitchers filled with water, how can she have pitchers with 5,3, and 3 liters of water?

    asked on November 13, 2014
  22. calculus

    Lim as x approaches 2 of (x^2-kx+4)/(x^3-8)

    asked on February 15, 2013
  23. calculus

    Lim as x approaches 2 of (x^2-kx+4)/(x^3-8)

    asked on February 13, 2013
  24. algebra 2

    Find the function value. Let f(x) = e3x. Find f(0.06), rounded to four decimal places.

    asked on July 12, 2011
  25. math

    Decide whether the relation is a function or not {(-4, -8), (-1, 2), (2, -2), (6, 1)}

    asked on February 9, 2010
  26. Math

    3 Islands K,M, H= 5300 miles squared H 3293 miles squared larger than M M is 177 miles squared larger than K What is the individual areas of Islands

    asked on September 30, 2009
  1. social studies

    ramdomthing is correct

    posted on April 22, 2019
  2. Physics


    posted on February 12, 2018
  3. Math

    What’s the answer

    posted on December 19, 2017
  4. Math

    Ok thank you! I think i understand now :D

    posted on October 16, 2017
  5. Algebra

    You multiply the 10 by 10 to make the fraction out of 100. then do the same thing to 6, and you get 60!

    posted on August 23, 2017
  6. math

    42 its always 42

    posted on January 12, 2016
  7. math


    posted on January 12, 2016
  8. Math -- Algebra


    posted on December 1, 2015
  9. physics

    What is the answer? I need it.

    posted on July 15, 2014