A dry cells has b) The graphite rod does not undergo reduction, even though it is the cathode<span>.</span>
Answer:
y₁ = 0.48
y₂ = 0.52
Explanation:
The method to solve this question is to use Raoult´s law for ideal solutions, which tell us that the vapor pressure of a component A in solution is equal to:
Pa = Xa Pºa
where Pa is the partial pressure of a, xa is its mole fraction, and Pºa is the vapor pressure of pure A.
From here it follows that for a binary solution the total pressure is the sum of the partial pressures of each component.
With vthis in mind we are ready to calculate and solve our question:
P1 = x₁Pº₁ = 0.670 x 20.9Torr = 14.00 torr
P₂ = x₂Pº₂ = (1-0.670) x 45.2 torr = 0.33 x 45.2 torr = 14.91 torr
Ptotal = 14.00 torr + 14.91 torr = 28.91 torr
The composition of the vapor will be given by:
y₁ = Py₁ / Ptotal = 14.00 torr/ 28.91 torr = 0.48
y₂ = 1 - y₁ = 1 - 0.48 = 0.52
The mass of 4.5 moles of sodium fluoride is 189g
Answer:
If the products contain 3 nitrogen atoms, then so did the reactants since overall mass is conserved in a chemical reaction.
Explanation:
so the answer is A
The answer is 18 amino acids