24g 4Al+3O2=2Al2O3
27g x(g)
108 96
X=24g
Answer:
0
Explanation:
CaBr₂ is a compound, so it shouldn't have a charge--it's not an ion. But let's check to make sure.
Calcium has a charge of +2.
Bromine has a charge of -1, but there are two Br, so the charge is -2.
+2 + -2 = 0, so the overall charge is 0!
Answer:
Temperature measures thermal energy (kinetic energy), and heat is the flow of thermal energy.
Explanation:
The earth has enough gravity to do that
Answer is: <span>spontaneous in the reverse direction at all temperatures.
</span>Spontaneity can be determined using the change in <span>Gibbs free energy:
</span>ΔG = ΔH - TΔS.
ΔG changes in Gibbs free energy.
ΔH changes in enthalpy.
ΔS changes in entropy.
T is temperature.
<span>When ΔS < 0 (</span>negative entropy change)<span> and ΔH > 0 (endothermic reaction), the process is never spontaneous (</span>ΔG> 0), but the reverse process is always spontaneous.
