electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy.
Answer:
0.417 mol could be extracted from a medal that weighs 115 grams
Explanation:
Our Olympic medal weighs 115 g and we know that 71.5% is gold so how much from this medal is gold?
100 % ____ 115 g
71,5 % ____ 82.22 g
Molar mass of Au is 196.97 g/m
Mass / Molar mass = Moles
82.22 g / 196.97 g/m = 0.417 moles
Answer:
ΔG° = 1747.523
Explanation:
The parameters mentioned are;
Gibbs Free energy ΔG°
Equilibrium constant Kc
Temperature T = 37 + 273 = 310 (upon conversion to kelvin temperature)
The formular relating all three parameters is given as;
ΔG° = -RTlnKc
Where; R = rate constant = 8.314 J⋅K−1⋅mol−1
Upon solving;
ΔG° = - 8.314 * 310 * ln(1.97)
ΔG° = 1747.523