13. a radioisotope has a half-life of 4 days. how much
of a 20-gram sample of this radioisotope remains
at the end of each time period?
a. 4 days
b. 8 days

step-by-step explanation:

goog be able to you with that maybe

the correct answer is a) "catholic church".

the proposals that liberals in mexico made during 1855 were particularly focused on a person's individual rights, such as the freedom of speech, the freedom of conscience, freedom of assembly, and the right to possess weapons.

when the constitution was formally published 2 years later (1857). it also contained an article which permitted education free from any religious influence, the removal of the catholic church institutional privileges, and the sale of property belonging to the church. all of these provisions were clearly against the catholic church interests.