Suppose there is a mineral body which contained some amount of superscript 238 baseline upper u, which has a half-life of 4.51 times 10 superscript 9 years, but has no lead, the end product of the radioactive decay of superscript 238 baseline upper u. if the ratio of superscript 238 baseline upper u to lead atoms today is 0.42, how long ago did the mineral body form?

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

(no3)⁻n has oxidation number x,o has oxidation number -2.(x*1 -2*3) charge of the nitrate ion, and we know that charge of the nitrate ion =-1.so,(x*1 -2*3) =-1x-6=-1x=+5answer a. +5.

Answerit is not a renewable energy source;