1. What enthalpy change accompanies the reaction below? Is it exothermic or endothermic?[pay attention to the number of each type of compound]
2Al(s) + 3H20(1) - A1,0,(s) + 3H, Q)
Al=0
AL O, = -1675.7
H2O = -285,83
H₂ = 0

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest