Answer:
iron (III) oxide =Fe2O3
iron(III) carbonate =Fe2(CO3)3
Answer:
The answer is "
".
Explanation:
Please finds the complete question in the attached file.


The mass of acetone to be weighed is 
As has an atomic number of 33, so it has 33 protons.
It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.
It has a mass of 75, which is the sum of neutrons and protons.
33+n=75 ---> n = 75 - 33 = 42 neutrons
The answer is e) 33 protons, 42 neutrons and 36 electrons.
Answer:
a new discover a new theory
H2S and HS- are a conjugate acid-base pair.