The atomic number of oxygen is 8, because oxygen has a. electrons in eight shells. b. eight protons in the nucleus. c. a second shell with eight electrons. d. an atomic mass of 8.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

11) burning your hand when accidentally touching a hot plate is an example of which heat transfer? a. conduction b. convection c. radiation d. none of these

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.