Four grams of calcium must be combined with phosphorus to form one mole of the compound Ca3P2
Answer:
The C-O stretch of phenol
Explanation:
Electron delocalization causes the of the phenol to have partial double bond character, whereas the  of the cyclohexanol is a pure single bond. Again, we know as the bond order or bond strength increases the absorption occurs at larger wave number. So, the  stretch of the phenol occurs at larger wave number.
Answer:
The system can operate on a set level of parts per million (ppm) chlorine, where the set level is automatically maintained.
The beginning of the Pre Cambrian is known as the Hadean eon. The planet was just born, and it was very very hot, and in fact molten. There were a lot of volcanic activities, and because of the way the solar system was created, there were still a lot of collisions between different bodies