D. Sonic booms. Hope this helps
Ionic bonding is the answer
Atomic weight is Ar of the atom (what you see on the periodic table)
atomic weight<span> is relative </span>atomic mass, so yeah same thing
PbCl2--->Pb2+ + 2Cl-
The mass of PbCl2 is =mass of the beaker+Pbcl2 minus mass of the beaker
that is 62.19-57.77g= 4.42grams
moles of PbCl2= 4.42g/278g/m0l = 0.0159moles
concentration of (Pb2+)
since mole ratio of PbCl2 to Pb2+ is 1:1 therefore the moles of Pb2+ is also 0.0159moles
concentration =0.0159/100 x1000=0.159M
concentration of CI- is two time that of Pb2+ from the equation above therefore concentration of Cl- = 0.159 x2 =0.318M
Answer:
T = 401.6 K
Explanation:
Given reaction:
The thermodynamic parameters; ΔG°, ΔH° and ΔS° are related via the Gibbs -Helmholtz equation given as:
For a given reaction, the gibbs free energy change ΔG° is related to the equilibrium constant K as:
It is given that K = 1,
Therefore,
Substituting for ΔG° in equation (1)
