Can anyone me with this?
the equation below shows the decomposition of lead nitrate. how many grams of oxygen are produced when 23.0 g no2 is formed? 2pb(no3)2(s) _ 2pbo(s) + 4no2(g) + o2 (g

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.