use a periodic table, to explain how colliding lead and nickel atoms could produce an element assigned the atomic number of 110

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?