Question

Mr. Avogadro started with 5.14x10^22 atoms of Pa-234. Ten days later Mr. Avogadro calculated the original sample had only 6.43 X 10^21 atoms of Pa-234. What's the half life of Pa-234? PLEASE HELP WILL MARK BRAINLIEST!!

Answer 1

6.022×10^23 i think this is the answer

Answer 2

6.022x10^23 is Avogadro’s number. The question is asking for the half life of Pa-234. Avogadro’s number is part of what you would use to solve for the half life of Pa-234. The half life of Pa-234 is about 1.17 minutes. Half life will have time as it’s units such as minutes, hours, days, weeks, and months.