Which statement(s) is/are false? a. the number of protons determines what type of element an atom is
b. protons and neutrons repel each other and position themselves far apart inside the atom
c. all atoms are about the same size
d. neutral atoms are made of specific numbers of protons and electrons but the number of neutrons they possess can vary a little bit

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Why is carbon ideal for making different compounds?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.