How would you create an ion with a -1 charge comparing number of electrons and protons

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Freezing 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.

What is one real world example of a colligative property?