Answer: A. 2
Explanation: The outermost energy level shell is 4s2.
<span>According to Faraday's Law,
W = I t e / F
Where,
W = Amount deposited = ?
I = Current = 3 A
t = Time = 965 s
e = Chemical equivalence = 52/3 = 17.33
F = Faraday's Constant = 96500
Putting Values,
W = (3 × 965 × 17.33) ÷ 96500
W = (50170.35) ÷ 96500
W = 0.52 g
As we know,
Moles = mass ÷ M.mass
Putting values,
Moles = 0.52 ÷ 52
Moles = 0.01</span>
B: Low Melting Point. if you need me to send you my notes tomorrow
Answer:
3
Explanation:
Data obtained from the question include:
Concentration of NO, [NO] = 0.1M
Concentration of NOBr, [NOBr] = 0.1M
Concentration of Br, [Br2] = 3M
Equilibrium constant, Kc =..?
The equilibrium constant, Kc is simply the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.
Thus, the equilibrium constant, Kc for reaction can be obtained as follow:
2NOBr <==> 2NO + Br2
Kc = [NO]² [Br2] /[NOBr]²
[NO] = 0.1M
[NOBr] = 0.1M
[Br2] = 3M
Kc =..?
Kc = [0.1]² [3] /0.1]²
Kc = 3
Therefore, the equilibrium constant Kc, for the reaction is 3.