# LUx

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

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?

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

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

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

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

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