Answer is: temperature must be less than 140 K.
Gibbs free energy
(G) determines if reaction will proceed spontaneously. <span>If
the value of G is a negative, the reaction is spontaneous. <span>ΔG = ΔH - T·ΔS.
</span></span>ΔH = -70.00 kJ.
ΔS = -0.500 kJ/K.
-70 kJ = T · (-0.5 kJ/K).
T = -70.00 kJ ÷ (-0.500 kJ/K).
T = 140 K.
Answer: The objects that are luminous are a lamp and a computer screen
Explanation: This is because these two objects shine or glow with light.
Explanation:
The similarities of the inner and outer planets are The inner planets are often referred to as “terrestrial” or “rocky” planets. The outer planets, meaning those planets outside the asteroid belt, are called “gas giants.” The terrestrial planets are small (astronomically speaking). Earth is the largest one, with a diameter of about 8000 miles
Answer:
The appropriate alternative is option C "".
Explanation:
The given value is:
Energy of photon,
E =
As we know,
h =
Now,
The frequency of the light will be:
⇒
On substituting the given values, we get
⇒
On solving, we get
⇒
Answer:
Explanation:
1. Gather the information
We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.
Mᵣ: 16.04 32.00 44.01
CH₄ + 2O₂ ⟶ CO₂ + 2H₂O
m/g: 60
1. Moles of CO₂
2. Mass of CH₄
(a) Moles of CH₄
(b) Mass of CH₄
3. Mass of O₂ required
(a) Moles of O₂
(b) Mass of O₂