45\nthe melting and boiling points of a substance are independent of\n○a. rate of heat change.\n○b…

45\nthe melting and boiling points of a substance are independent of\n○a. rate of heat change.\n○b. mass.\n○c. volume.\n○d. all of these

45\nthe melting and boiling points of a substance are independent of\n○a. rate of heat change.\n○b. mass.\n○c. volume.\n○d. all of these

Answer

Brief Explanations:

Melting and boiling points are characteristic physical properties of a substance. They are intensive properties which do not depend on the amount (mass or volume) of the substance or the rate at which heat is added or removed.

Answer:

D. all of these