An atom has 27 protons and 22 neutrons. what is the chemical symbol for the atom

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?

Which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?