In your secret lab, you have 20 g of an unknown radioactive substance that
you know is in the uranium decay family. After nine minutes, there are only 2.5
grams left. What is the most likely radioisotope?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.

What is the correct lewis dot structure for arsenic?