Helium 2 He 27 4.0026 2. 1. What is the atomic mass of Helium? Using that, determine the number of neutrons in a Helium atom. Atomic Mass= Neutrons=

2.What is the atomic number of Helium? What subatomic particle does it refer to? *Remember APE MAN! He (Helium) Atomic Number= Atomic # is equal to the # of HA

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

What is the polyatamic ion of thiosulfate

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor