How much energy is released when 38,4 g of liquid benzene is cooled from 73.0°C to 15.0°C? (Cs=1.73J/gC) 32.2 kJ
0.996 kJ
4.85 kJ
49.3 kJ
3.85 kJ

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante