What is the difference between empire and kingdom​

Calcium chloride +gold(1) oxide—>

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

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.