10 POINTS Which tool can be used to measure the volume of a liquid to one decimal place?

Options:
a beaker
a graduated cylinder
an Erlenmeyer flask
a test tube

Of course: ) what’s your name ?

The correct answer is "false"

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.