The atomic mass of an atom is determined by what?
a. numbers of neutrons and electrons
b. number of protons and electrons
c. number of protons
d. number of protons and neutrons

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

The activation energy for a(n) is quite large and usually takes extra energy from the environment, it is normally not a natural spontaneous process. combustion reaction endothermic reaction exothermic reaction catalyzed reaction

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 6.00 mol fe and 8.45 mol nio(oh) react?