An unknown substance has a mass of 21.7 g. The temperature of the substance increases by 19.7°C when 165 J of heat is added to the substance. The table lists the specific heats of select substances.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

When a scientific theory has been tested and proved by the scientific community, it becomes a law

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d