An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. this atom has protons, neutrons, and electrons.

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer.

Of element x has 22 protons, how many electrons does it have

Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal