it is most likely a beaker, beacuse 300ml is quite a large volume. Otherwise, it would be a measuring cylinder or pippette
I cannot fully remember but the charge of a compound always has to be the same. However, I believe that the sign of the Y2 means that it is positive 2.
so in my opinion it is in between b and c. use your best judgment.
An organism that has two different alleles for a trait is called heterogeneous
Atoms must gain or lose electrons in order to become ions if they are to form ionic bonds.
