Multiple ChoiceWhich of the following is a factor in determining the average atomic mass of an element?38views
Multiple ChoiceThe atomic mass of the element niobium (Nb) is 92.906 amu. Which of the following measurements correctly represents this atomic mass?48views
Multiple ChoiceWhat is the mass number for an atom of barium containing 56 protons and 78 neutrons?43views
Multiple ChoiceWhich of the following best describes the difference between atomic number and mass number?37views
Multiple ChoiceWhich numerical setup can be used to calculate the atomic mass of the element copper, given that copper has two naturally occurring isotopes: Cu-63 (abundance 69.17%, mass 62.93 u) and Cu-65 (abundance 30.83%, mass 64.93 u)?44views
Multiple ChoiceWhat is the average atomic mass of uranium to the nearest hundredth of an atomic mass unit?39views
Multiple ChoiceWhich of the following best describes the difference between atomic mass and atomic number?33views
Multiple ChoiceWhich of the following pairs of subatomic particles are approximately equal in mass?33views
Multiple ChoiceWhich term refers to the average mass of all the naturally occurring isotopes of an element?31views