Answer:
D- Kinetic Molecular Theory
Explanation:
. Gases consist of large numbers of tiny particles that are far apart relative to their size.
.Collision between gas particles and between particles and container walls are elastic collisions.
.Gas particles are in continuous motion. possess kinetic energy.
. Gas molecules have negligible intermolecular forces.
. Gas molecules have an average kinetic energy proportional to the ideal gas's absolute temperature.
Answer:
Its nucleus
Explanation:
also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.
The sum of all energies involved in breaking and or forming chemical bonds within the reactants side of the reaction is equal to the sum of all energies involved in the formation and rearranging of atoms within the product side of the chemical reaction.
The total energies of reactants = the total energies of products.
These two factors are:
*radiation coming into the Earth's atmosphere
*radiation going out the Earth's atmosphere
These two factors could be lumped into one natural phenomenon called the greenhouse effect. The Earth's atmosphere is a very unique characteristic in the solar system because it makes the planet livable. Without the atmosphere's work, the day would be too hot and the night would be too cold. The trapping of radiation, hence heat, keeps the overall temperature of the Earth.
Answer:
ΔH°rxn = - 433.1 KJ/mol
Explanation:
- CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)
⇒ ΔH°rxn = 4ΔH°HCl(g) + ΔH°CCl4(g) - 4ΔH°Cl2(g) - ΔH°CH4(g)
∴ ΔH°Cl2(g) = 0 KJ/mol.....pure element in its reference state
∴ ΔH°CCl4(g) = - 138.7 KJ/mol
∴ ΔH°HCl(g) = - 92.3 KJ/mol
∴ ΔH°CH4(g) = - 74.8 KJ/mol
⇒ ΔH°rxn = 4(- 92.3 KJ/mol) + (- 138.7 KJ/mol) - 4(0 KJ/mol) - (- 74.8 KJ/mol)
⇒ ΔH°rxn = - 369.2 KJ/mol - 138.7 KJ/mol - 0 KJ/mol + 74.8 KJ/mol
⇒ ΔH°rxn = - 433.1 KJ/mol
