Which statement best explains the octet rule?
a) atoms gain , lose, or share electrons at achieve a full valence shell
b) compounds always consist of 8 shell
c) molecules always of 8 atoms
d) all atoms require of 8 electrons to from bonds

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

Air can be considered a mixture. which statement does not explain why?

Which statement best describes what happens when molecular compounds melt