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  1. J

    Highschool chemistry question on Le Chatlier's Principle

    Homework Statement I just have a concept question on LCP. in reaction: A(aq) + B(aq) <-> C(aq) A is added and rxn is left to reach a new equilibrium. Once @ new eqm, is [A] higher than before? and obviously [C] is lower, right?
  2. J

    Common ion effect - calculations.

    Homework Statement When 50.0 mL of a 2.0 × 10-4 M Ag2CrO4 solution was added to 50.0 mL of a Na2CrO4 solution a ppt formed (Ag2Cro4). What was the initial concentration of this Na2CrO4 solution? Ksp Ag2CrO4 = 1.1 × 10-12 Homework Equations Given A2 (aq) + B(aq) -> AB(s) Ksp = [A]n[B] The...
  3. J

    2D Vector Kinematics Problem (projectile)

    Homework Statement A person kicks a ball h of 2.0 m above the floor. If the ball flies at some angle and lands 1.2 s later at horiz d of 6.5 m from its orig. place, calc. the orig. horiz and vert. comp.s of the ball's v. Calc. the final components of the ball's v. (Assume the ball has no horiz...