Hòa tan 6,5 g kẽm càn vừa đủ Vml ddHCl 2M
a) viết pthh

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

a) the particles of the chair are strongly held together.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;