Answer:
Use this: I think the photochemical smog levels are higher during the summer do to the increase in car usage and pollution. Studies show that more people use cars in the summer. In addition, the hot, musty, humid air in the summer can significantly increase pollution effect.
Explanation:
Answer;
P4O10 - molecular solid
Graphite - network solid
Ammonium phosphate - ionic
Brass - metallic
SiC - network solid
Rb- metallic
I2 - molecular
LiBr- ionic
P4 - molecular
Plastic - amorphous
Si - network
Explanation:
An ioinc solid is made up of a pair of oppositely charged ion held together by electrostatic interaction between the bonding species.
A covalent solid is a solid in which the atoms involved in the solid are bonded together by covalent bonds. Covalent solids are also molecular.
Metals are held together by interaction of metal ions and a sea of electrons. This is called the metallic bond.
A network solid is composed of covalently bonded atoms that repeat itself in a definite manner. E.g SiC
This is a synthesis reaction. Synthesis reactions are when two elements or simple compounds combine to make a single compound. Here Al and O2 are both elements, so they must perform synthesis.
The molar enthalpy is 447 kJ and the reaction is endothermic
8 hours times 60 minutes is 480 and times 60 seconds is 28800 seconds of sleep per day. That times 7 days is 201,600 seconds of sleep per week
