Which reactants would lead to a spontaneous reaction?

A. Cu2+ and Ag
B. Ba2+ and Mn
C. Ag+ and Cu
D. K+ and Na

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

What term describes technology that operates on an atomic level

What are the two largest greenhouse gases