Answer:
True
Explanation:
Bohr proposed an atomic model in which;
- the electrons found in an atom can only occupy orbits for which the angular momentum is quantized, which results in discrete values of energy level.
- the electrons in such stationary state or ground state emits no light, but
- if an electron jumps to a lower state, it emits a photon whose energy equals the difference in energy between the two states.
Answer:
d) 182 mm Hg
Explanation:
The ratio of partial pressure to total pressure is equal to the molar ratio.
P / 870 mm Hg = 0.21
P = 182 mm Hg
Answer is D.
Answer:
See the explanation below.
Explanation:
53) Yes, this process is called latent heat transfer, it happens when heat is transferred to a body or a substance, an increase in its energy is observed without presenting an increase in temperature. An example of this can be seen in the evaporation of water.
54) It absorbs energy since heat transfer always occurs from a space of higher temperature to another with lower temperature so as the wax freezes the heat is transferred from the environment to the wax.
55) The water vapor and wet air will be absorbed by the canvas, the heat contained in this water vapor will be absorbed by the canvas in this way decreases the temperature of the water inside the canteen.
56) The process is vaporization. The refrigerant of the air conditioning equipment enters the coil, in the form of liquid, this liquid is at low temperature, so that the room air at a higher temperature, exchanges heat with the refrigerant liquid, the refrigerant liquid changes the phase of liquid to vapor, for when it is completely vaporized this can be sucked by the compressor equipment.