1. (NH4)2C2O4 + Ba(NO3)2 à BaC2O4 + 2 NH4NO3

    2. 3.996x1024 mc (NH4)2C2O4 x (1 mol / NA mc) x (1 BaC2O4 / 1 (NH4)2C2O4) x (225.347g / 1 mol) = 1495 g BaC2O4

     

  2. Ca + 2 HOH à Ca(OH)2 + H2

    3. 435.6 g Ca x (1 mol / 40.078 g) x (1 H2 / 1 Ca) = 10.87 moles H2

    794.5 g H2O x (1 mol / 18.0152 g) x ( 1 H2 / 2 H2O) = 22.05 mols H2

    LR = Ca

    XS = H2O

    794.5 g H2O - [ 794.5g H2O (10.87/22.15)] = 794.5 - [794.5 ( .4930)] = 794.5 - 391.7 = 402.8 g H2O xs

  3. Cs2SO4 + Ba(NO3)2 à BaSO4 + 2 CsNO3

    4. 34.67 mL Cs2SO4 x (1L / 1000mL)x (1.99mols / 1 L) x (361.87 g / 1 mol) = 25.0 g Cs2SO4

  4. AgNO3 + NaCl à AgCl + NaNO3

    5. 17 skrs x (94.38 g NaCl/shkr) x (1 mol / 58.443 g ) x (1 AgCl / 1 NaCl) x (143.321 g / 1 mol) = 3935 g AgCl

    % y = (198.35 g AgCl / 3935 g AgCl ) x 100 = 5.041%

  5. Cu +2 NaNO3 à Cu(NO3)2 + 2 Na

    6. Reaction does not occur. Zero grams are produced.

  6. Ba(C2H3O2)2 + Na2SO4 à 2 NaC2H3O2 + BaSO4

56.78g Ba(C2H3O2)2 x(1 mol / 255.42 g )x(2 NaC2H3O2 / 1 Ba(C2H3O2)2 )x(0.350 mol /1L) x (1000mL/1L)=156 mL

6.778x1022 mc Na2SO4 x (1 mol / NA mc) x (2 NaC2H3O2 / 1 Na2SO4) x (0.350 mol / 1L) x (1000mL/1L) =78.8 mL

Correct answer = 78.8 mL sodium acetate