An isotope that undergoes radioactive decay:
A always has a very short half-life.
B has an unstable nucleus.
C will not be found in nature.
D will not participate in a chemical
reaction.

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Which best describes how johannes kepler developed his laws of planetary motion