A. An atom has a mass number of 19 and an atomic number of 9. What element is it? What is its symbol? How many protons, neutrons, and electrons does it have?

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

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.

Type the letter that represents the correct location for each particle type below.