An isotope of cesium has 55 protons and 78 neutrons. what is the mass number of this isotope?

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

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?

What shape would a molecule with two bound groups and two lone pairs have?