Answer :
Heating takes place during the process of Evaporation, Melting, Sublimation.
Cooling takes place during the process of Freezing, Condensation, Deposition.
Explanation :
Heating : It means thermal energy releases.
Cooling : It means thermal energy absorbs.
Evaporation : It is a type of vaporization process in which a liquid changes into gas phase by providing heat.
Melting : It is a process in which a solid changes into liquid phase by providing heat.
Sublimation : It is a process in which a solid changes directly into gas phase without passing through a liquid phase.
Freezing : It is a process in which a liquid transform into a solid phase at low temperature.
Condensation : It is a process in which a water vapor(gas) changes into liquid state at low temperature.
Deposition : It is a process in which a gas transforms directly into a solid phase without passing through a liquid phase.
Answer:
The steps are arranged in the following order, describing how carbon dioxide and photons impact the earth's warming.
Explanation:
The sequence is in the following order;
- The sun radiated sunlight (visible) photons
- Photons from the sun strike the earth and become infrared photons
- Earth radiates infrared photons into the atmosphere
- CO2 in the atmosphere absorb infrared photons
- CO2 in the atmosphere emit infrared photons back towards earth
Carbon dioxide (CO2) molecules can absorb energy from infrared (IR) radiation. Due to vibrations caused by this absorption, the CO2 molecules later release extra energy by emitting another infrared photon.
This ability of CO2 molecules to absorb and re-emit infrared energy is what makes it an effective heat-trapping greenhouse gas.
Answer:
(c)-He separates the larger pebbles and other debris from the finer sand by sifting it with wire mesh.
Explanation:
A mixture is an association of substances that not react between them. It can be homogeneous when it's not possible to see the substances, or heterogeneous when it's possible to see each the substances.
Randy separates the substances of the soil with a wire mesh, so it's possible to define the substances, then the mixture is heterogeneous.
N2 + 3 H2 >> 2 NH3
moles NH3 = 11.50 g /17.0307 g/mol=0.6753
the ratio between H2 and NH3 is 3 : 2
moles H2 needed = 0.6753 x 3/2 =1.013
mass H2 = 1.013 mol x 2.106 g/mol=2.042 g
The Final Pressure of the gas is 6 kPa
<h3>What is Boyle's Law ?</h3>
At constant Temperature , the absolute pressure exerted by the gas is inversely proportional to the volume of the gas.
It is given that
To determine Final Pressure , Boyle's Law will be applied
300 * 2 = P₂ * 100
P₂ = 300 * 2 / 100
P₂ =6 kPa
Therefore the Final Pressure of the gas is 6 kPa.
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