Most popular questions and responses by Tintin
  1. Chemistry

    the equilibrium constant Kc for the reaction H2 + Co2 to H2O + CO is 4.2 t 1650°C initially .80 mol of H2 and 0.8 mol Co2 are injected into a 5.0 flask. Calculate the concentration of each species at equilibrium

    asked on May 6, 2015
  2. chem

    Quantitative analysis of soda ash by double indicator *why there is a need to boil distilled water in the preparation of base solutions? *why a mixture of NaOH and NaHCO3 is incompatible? *why there is a need t o boil the solution before reaching the

    asked on December 22, 2008
  3. math

    Suppose that 7 knights and 4 ladies are to be seated at a round table. Find the number of ways this can be done in each of the following cases: a) There are no restrictions; b) No 2 ladies are adjacent; c) The 4 ladies form a single block

    asked on January 14, 2014
  4. Math

    Ali has a rectangular pool around which he wants to construct a fence. The pool is 10 m long and 6 m wide, and he wants the fence to be 2 m from the edge of the pool on all sides. How many metres of fencing will he need

    asked on September 4, 2016
  5. Math

    A basket contains 12 mangoes and 10 santol fruits. joey chooses a mango or a santol. Then Jenny chooses a mango and a santol. For what choice of Joey will Jenny have a greater number of choices?

    asked on January 14, 2014
  6. math

    Ten distinct noncollinear points are chosen on a plane. a) How many line segments can be formed by joining any two of these points?

    asked on January 14, 2014
  7. college

    why a weight reading is considered constant when the last two consecutive weights are within 0.0003g?

    asked on December 8, 2008
  8. geometry

    a pentagon has sides 2N+7,3N+2,6,7N,5N-6.If the perimeter is 180,find the length of each side.

    asked on July 19, 2010
  9. bnhs

    a regular triangle and a regular hexagon have the same perimeter length.If the length of a side of hexagon is 20cm,how long is each side of the triangle?

    asked on July 19, 2010