When thermal energy is added, the motion of particles increases.
This can be thought of when thinking of a gas. We know that a gas includes particles that move fast and are spaced far apart from each other. On the opposite side of the spectrum, we know that a solid includes particles that are closely packed together with limited movement.
Using those examples, we know that a solid usually occurs at colder temperatures (with low thermal energy), and gases occur at warmer temperatures (with high thermal energy).
Therefore, when thermal energy is added, particle motion increases.
Answer:
Using my searching skills, the answer is motor neurons.
Explanation:
Motor neurons carry impulses from the brain and spinal cord to muscles or glands.
Answer:
C
Explanation:
Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.
Answer:
1728 kg is the mass of air for the room
Explanation:
An exercise of unit conversion.
The volume of the room will be:
24 m . 15 m . 4m = 1440 m³
Density of air is 1.20 g/L which means that in 1L, there is contained 1.20 g of air.
1L = 1dm³
1m³ = 1000 dm³
1440 m³ . 1000 = 1440000 dm³ ⇒ 1.44x10⁶ L
Density of air = 1.20 g/L = mass of air / volume of air
1.20 g/L = mass of air / 1.44x10⁶ L
1.20 g/L . 1.44x10⁶ L = mass of air → 1728000 grams
1 g = 1x10⁻³ kg
1728000 g / 1000 = 1728 kg
Answer:
P(N₂) = 4.02 atm
Explanation:
Number of moles of O₂ = 4 mol
Number of moles of N₂ = 8 mol
Total pressure = 6 atm
Partial pressure of N₂ = ?
Solution:
We will calculate the partial pressure by using mole friction.
P(N₂) = X(N₂)P(total)
X(N₂) = mol friction = moles of N₂ / total number of moles
X(N₂) = 8 mol / 12 mol = 0.67
Partial pressure of N₂:
P(N₂) = X(N₂)P(total)
P(N₂) = 0.67 × 6 atm
P(N₂) = 4.02 atm