Hallf Life Problems + More

[Flengo Jr.]

Homework Help plox

Section II - For each pair, write of they are isotopes of the same element or two differen't Elements. Nuclear Notation form please

1.) Element Q has 6 Protons and 7 neutrons
Element R has 7 protons and 7 neturons

2.) Element T has an atomic number of 20 and an atomic mass of 40
Element Z has an atomic number of 20 and an atomic mass of 41

3.) Element P has an atomic number of 92 and an atomic mass of 238
Element S Has 92 Protons and 143 Neutrons

Half - Life Problems

Section III

1.) The half-life of the fictional isotope Quantium-47 is 1,000 years. If a fox bone started out with 8,000 grams of Quantium-47, how many grams of Quantium-47 would be remaining after 5,000 years?

2.) A 100 gram sample of Iodine-131 is observed for 16 days and is found to have 25% of it's original Iodine-131 remaining. What is the half-life of Iodine - 131



Please Help i would appreciate it

[Ixxz]

I hope I wasn't too late. @APEsmoker

[Flengo Jr.]

I hope I wasn't too late. @APEsmoker

Thanks Man You saved me literately two hours of having to stay after class. +Rep + Thanks

---------- Post added at 05:07 PM ---------- Previous post was at 05:00 PM ----------

@Liz @Hero

Or who is Moderator of this section this thread is Solved Thanks