After a long night of bowling, Burt walked out the door of the Lucky Strike Bowling Alley . He realized that someone was behind the door. It looked as if that someone had a switchblade knife. Burt’s emotional experience came at the same time as his heart began racing. What theory of emotion is Burt displaying? A. Schachter-Singer Theory

B. James-Lange Theory

C. Cannon-Bard Theory

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

i thinking chemical change

links? do you have a link? i don't see anything?

characteristics of hydrocarbons