Manganese, Mn, forms a number of oxides. A particular oxide is 77.4% Mn. What is the simplest empirical formula for this oxide?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: