ASK YOUR TEACHERAllicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: C: 44.4%; H: 6.21%; S:39.5%; O: 9.86%. What is its empirical formula

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

What is a property of a double replacement reaction

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.