Select all that apply. salt dissolved in water is a solution, therefore
a. salt and water are chemically combined
b. salt is not chemically bonded to water
c. the quantity of salt and water is fixed
d. the ratio of salt to water may vary
e. salt and water retain their own chemical properties

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

i believe it is c.) 1575 j.