Popular questions and responses by LUx
  1. chemistry

    Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C4H4 (-2341 kJ/mol), C4H8 (-2766 kJ/mol) and H2

    asked on December 28, 2010
  2. Social Studies

    Why was the united states interested in claiming the Oregon Country? Is it because they just wanted to expand their land even more?

    asked on May 11, 2014
  3. Math

    A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 gt^2 is used to calculate the distance (d) the ball has fallen after t seconds. The constant g is the acceleration of gravity, 9.8m/s^2. How long does it take the ball to hit the

    asked on November 19, 2012
  4. Trig

    The Stratosphere Tower is Las Vega dominate the city's landscape by rising 1,149 feet above the desert floor. The restaurant at the top of the tower turns slowly and completes a full revolution in one hour. How many radians will the restaurant have rotated

    asked on February 22, 2016
  5. chemistry

    A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline

    asked on April 21, 2013
  6. reading?

    Which part of speech is the underlined word in the sentence? Next, add the eggs to the batter. A. preposition B. adverb C. conjunction D. interjection

    asked on February 11, 2015
  1. health

    haha me too ! thanks for the answer !!

    posted on October 26, 2015
  2. How to find the enlarged area- Geometry

    A 4 by 6 photo is enlarged to 150% of it's original size, what would be its new length and width?

    posted on September 15, 2015
  3. math

    There is a pretty standard way of doing this sort of problem. Keep it in mind when you encounter this sort of expression. Write sqrt(49x^2+x)-7x=[sqrt(49x^2+x)-7x][sq... =[49x^2+x-49x^2]/[sqrt(49x^2+x)+7x] =x/[sqrt(49x^2+x)+7x] =1/[sqrt(49+1/x)+7]-> 1/14

    posted on February 11, 2015
  4. math

    When x gets very large, the -x inside the square root is insignificant in comparison to the 4x^6 so can effectively be ignored. The same thing about the 3 on the bottom in comparison to the x^3. The effectively leaves sqrt(4x^6)/x^3 = 2 It is usually a

    posted on February 11, 2015
  5. Social Studies

    Thank you so much!

    posted on May 11, 2014
  6. Social Studies

    *United States

    posted on May 11, 2014
  7. science( chem)

    what is the meaning of "rad" in [OH-]= rad(Kb*cNaA)

    posted on April 20, 2013