Answer:
T₂ = 379.4 K
Explanation:
Given data:
Initial volume = 1.56 L
Initial temperature = 20°C (20+273 = 293 K)
Final volume = 2.02 L
Final temperature = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
T₂ = V₂T₁ /V₁
T₂ = 2.02 L × 293 K / 1.56 L
T₂ = 591.86 L.K / 1.56 L
T₂ = 379.4 K
In real life, a given system can approach equilibrium from different starting points but will still have the same equilibrium constant. It is because the rate of reaction for product formation and reactants forming is the same. It came to a point where their reaction attains equilibrium.
Answer:
λ = 426.7 nm
E = 4.66 x 10⁻¹⁹ J
Explanation:
The equation of frequency is:
f = v / λ
v: velocity
λ: wavelength
λ = v / f
λ = 3 x 10⁸ m.s⁻¹ / 7.03 x 10¹⁴ Hz
λ = 426.7 nm
The energy of a single photon is
E = hf
h: Plank's constant = 6.63 x 10⁻³⁴ m²kgs⁻¹
E = 6.63 x 10⁻³⁴ m²kgs⁻¹ x 7.03 x 10¹⁴ Hz
E = 4.66 x 10⁻¹⁹ J