Which set of coefficients will balance this chemical equation? __C2H4(g) + __O2(g) → 2CO2(g) + 2H2O(g)
2, 3
1, 3
1, 2
2, 5

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.