The isotope of atom A is the atom with 32 protons, atom B; the atom that has the same mass number as
atom A (71) is atom D.
Each isotope of lithium (atomic number 3) has three protons. The neutral atoms will also each have
three electrons. The n
Quantities in Chemical Reactions Review Package
n = moles m = grams, M= molar mass
N = number of molecules, atoms
NA = Avogadros constant
All non-zero digits are significant
Leading zeros are not significant, lagg
a. Since the balanced chemical equation for the reaction is 2H2 + O2 2H2O, in order to
form the water, you need two molecules of hydrogen for every one molecule of oxygen.
Given the quantities of reactants present in the container (12 H2 molecules an