What factors generally determine whether a reaction happens or not? A. Reaction rate and color
B. Presence of water and salt
C. Enthalpy and entropy
D. Keg and Ka​

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.