i really dont know and im so so so so sorry
I mostly believe in between D and B beacuse K3po4 and caco3 is not an element equation
Don’t really understand what you’re asking but, if you’re asking how to read a graduated cylinder:
Look at the graduated cylinder at eye level, find the meniscus, whatever the meniscus is at is your answer.
It’s C I think and I’m not sure
Answer:
an electron is part of the 3 things that are in an atom, it has a negative charge