Suppose 3 neutrons are released by an atom in the first stage of a fission chain reaction. Each of these neutrons has enough energy to cause another fission reaction in another nucleus of the material. If all the neutrons cause other nuclei to fission, how many total atoms will have undergone fission after the second chain reaction?

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?