fatma

Most popular questions and responses by fatma
  1. organic chemistry

    2. An unknown white solid has melting point range 119 – 121o C. Benzoic acid is a white solid of 122 o C melting point. How can a student confirm the identity of the unknown solid (is the benzoic acid or not)

    asked on March 16, 2017
  2. chemistry

    explain changes that occur when the following substances are separated heated in oven crucible 1)copper metal. 2)copper nitrate

    asked on December 31, 2018
  3. calculus

    Let f x   coth x . Use the Graph software posted in Moodle to do the following: (a) Graph f x  . (b) Graph the tangent and normal lines to the graph of f x  at x 1. (c) Graph f x  . (d) From the graphs obtained in parts (a)

    asked on April 19, 2014
  4. physics

    1\ Acar is moving with acceleration 200 m in 50 sec reached to velocity 10 m\sec .what the total distance the car moved in 60 sec

    asked on July 7, 2012
  5. math

    Write out the first five term of the sequence determi whether the sequence converges and if so find its limit ( n^2)/(4n+1) n= 1 to n = ∞

    asked on June 30, 2015
  6. math

    Write out the first five term of the sequence determi whether the sequence converges and if so find its limit (n/(n+3) n=1 to n = ∞

    asked on June 30, 2015
  7. math

    A product of a two digit number is24 when the number is reverse exceed the original number by 27 find the number

    asked on August 28, 2016
  8. math

    Find the area between x=-y and x=2-y^2

    asked on June 26, 2015
  9. math

    Find the exact arc length x=1/3(y^2 +2)^3/2 from y= 0 to y = 1

    asked on June 26, 2015
  10. Physica

    If a student desires to produce three times larger and an erect image from a double convex lens with focal length of 15 cm ,then he should place the object from the lens at ;

    asked on July 21, 2012
  11. math

    Divide the following by both long division and synthetic division a). x^3 + x^2 - 2x + 4 by x-2 b). x^5 + 4x^4 + x^3 - x^2 + 2x - 7

    asked on April 4, 2016
  12. math

    Sum[(-1)^(n - 1) (7/9^(n - 1)), {n, 1, Infinity}]

    asked on June 30, 2015
  13. math

    ∑ (-1)^((n-1)) . 7/9^(n-1) n=1 to ∞

    asked on June 30, 2015
  14. math

    ∑ (-3/4)^(n-1) n=1 to n=∞

    asked on June 30, 2015
  15. math

    Write out the first five term of the sequence determi whether the sequence converges and if so find its limit (n/(n+3) n=1 to n = ∞

    asked on June 30, 2015
  16. english

    Change the sentences,replacing the phrase people who are..with an adjective used as an noun. 1-People who are uneducated have a hard time catching up.

    asked on September 20, 2011
  1. 4th grade

    maybe there was a river

    posted on March 8, 2018
  2. 4th grade

    Zxcvfgnhjmk,l;

    posted on March 8, 2018
  3. organic chemistry

    I think it is a benzoic acid but it is impure

    posted on March 16, 2017
  4. math ALGEBRA

    T=5 u=6 5 + 6=11 65_56=9 Answer =56

    posted on August 28, 2016
  5. Algebra

    c^2 = a^2 + b^2 = 12^2 + 5^2 = 144 + 25 = 169 , then square root this number to give =13 ft. the length of the ladder :)

    posted on April 4, 2016
  6. Physics

    Amotorcycle slowed down to rest from avelocity of 10m\sec whiletraveling 30m what is its average acceleration

    posted on July 7, 2012
  7. acids and alkalis

    please tell me how many alkalias are there please i need it fo tomorrow or else i will get detention plzplz i love you and marry you if u tell me da answer plz i beg u reply back plz

    posted on October 7, 2008