12. Which of the following is a single replacement reaction?
A. 4Al(s) + 3O2(g) > 2Al2O3(s)
B. 2C4H10(g) + 13O (g) > 8CO2(g) + 10H2O(g)
C. CaCo3(s) > CaO(s)+ CO2(g)
D. Mg(s) + 2HCl(aq) > H2(g) + MgCl2 (aq)

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

Consider this initial-rate data at a certain temperature for the reaction described by

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.