7. How many moles of FeCl3 are needed to produce 805 grams of
MgCl2?
A. 157 moles
B. 450 moles
C. 5.64 moles
D. 7.35 moles

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.