A variation of this reaction has also been performed by undergraduates, where benzaldehyde (PhCHO) is used instead of 9-anthraldehyde. How many stereoisomers would be possible for the product of this Wittig reaction? (your answer should be an integer number)

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.