10. White dwarfs are very dence by
forces.
and are help up
11. Neutron stars are
Land are help up by
forces.
12. Black holes are
and are help up by
forces.
13. What are two theoretical uses for black holes?
a.
b.
14. Name at least three ways in which our lives are tied to the stars:
a.
b.

Pls help
c.

the answers would be

the first one and the second one

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.