The Rf values for several dyes in an ink are listed below. Which dye has the greatest affinity for the stationary phase? Dye #1: Rf 0.263
Dye #2: Rf. 0.551
Dye #3: Rf-0737
Dye #4: Rf 0.882
A. Dye #1
B. Impossible to determine from the data given.
C. Dye #3
D. Dye #2
E. Dye #4

Use the standard enthalpies of formation for the reactants and products to solve for the δhrxn for the following reaction. (the δhf of c2h4 is 52.26 kj/mol, co2 is -393.509 kj/mol, and h2o is -241.818 kj.) c2h4 (g) + 3o2(g) 2co2 (g) + 2h2o(g) δhrxn = the reaction is .

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->