Answer:
1.Nuclear fusion.
2.Out of fuel.
3.Fusion stops temperature drops.
4.Core contracts (gravity pulling atoms in).
5.Increased temperature (more atoms, more collisions) and density in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins again at step 1.
Explanation:
Answer:
acid turns blue litmus red and base turns red litmus blue
Answer:
Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and electrons.
Answer:
Obviously sponge bob come on!
Explanation:
He's amazing.
and part 2 is a secret lol
Answer:
B. Lower than 100 °C because hydrogen sulfide has dipole-dipole interactions instead of hydrogen bonding.
Explanation:
Boiling point is a physical property which is usually a product of breaking intermolecular bonds.
Both dipole-dipole attractions are intermolecular bonds and they have serious effect on boiling point of a substance.
Hydrogen bonds are very strong intermolecular bonds compared to dipole-dipole attractions. In hydrogen bonding hydrogen atom is directly joined to a highly electronegative atom.
Dipole-Dipole attraction exists between molcules that are polar. Such molecules line up such that the positive pole of one molecule attracts the negative pole of another.
Hydrogen bonds in water are much stronger than the dipole-dipole attraction of hydrogen sulfide.
