Answer: change
Explanation:
Change is change and sometimes it can be good and sometimes it can be bad.
Let's assume that CH₄ has ideal gas behavior.
Then we can use ideal gas formula,
PV = nRT
Where, P is the pressure of the gas (Pa), V is the volume of the gas (m³), n is the number of moles of gas (mol), R is the universal gas constant ( 8.314 J mol⁻¹ K⁻¹) and T is temperature in Kelvin.
P = 1 atm = 101325 Pa
V = 1.50 L = 1.50 x 10⁻³ m³
n = ?
R = 8.314 J mol⁻¹ K⁻¹
T = 0 °C = 273 K
By substitution,
101325 Pa x 1.50 x 10⁻³ m³ = n x 8.314 J mol⁻¹ K⁻¹ x 273 K
n = 0.0669 mol
Hence, moles of CH₄ = 0.0669 mol
Moles = mass / molar mass
Molar mass of CH₄ = 16 g mol⁻¹
Mass of CH₄ = moles x molar mass
= 0.0669 mol x 16 g mol⁻¹
= 1.0704 g
Hence, mass of CH₄ in 1.50 L at STP is 1.0704 g
When we have this equation:
CO(g) + Cl2(g) ↔ COCl2(g)
intial 0.147 0.175 0
change -X -X +X
final (0.147-X) (0.175-X) X
so from the ICE table, we substitute in Kc formula :(when we have Kc = 255)
Kc = [COCl2]/[CO][Cl2]
255= X / (0.147-X)(0.175-X)
255 = X / (X^2 - 0.322 X + 0.025725)
X = 0.13
∴[CO] = 0.147 - X = 0.147 - 0.13
= 0.017 m
Yes- as long as the roller coaster car is not powered once it leaves the station and energy loss due to resistance can be ignored.
Energies of a system:
- Potential Energy
- Kinetic Energy
- The term "Mechanical Energy" refers to the sum of both types of energy.
A roller coaster car moving along a level track with an initial velocity has mechanical energy in the form of kinetic energy.
The car would slow down while gaining height as its kinetic energy converts to gravitational potential energy when moving upwards along the track. It would have no kinetic energy since all its mechanical energy are now in the form of gravitational potential energy in case it comes to a stop before reaching the top of the track.
Similarly, the car gains speed while losing height as some of its gravitational energy is converted to kinetic energy when it travels downwards.
The mechanical energy of this vehicle conserves since any of the movements, moving upslope, downslope, or level, would ensure that
<em>Loss in Potential Energy </em>=<em> Gain in Kinetic Energy</em>
and vice versa.
Answer:
Glucose
Respiration
Oxygen
Explanation:
Cellular respiration can be shown with this word equation:
glucose + oxygen => water vapour + carbon dioxide + ATP energy
Our body uses cellular respiration to produce the energy our cells need for us to survive.
We get glucose from the food we eat, especially carbohydrates.
In this process, oxygen breaks down glucose (food) to produce ATP energy.