Free points willing to talk if you want

Guess what ya'll tmr is my birthday i finna be 15 lets ! and if sum person wanna report me because i'm happy then (f.uuu.c.k) outta here cuz you just a b.ii.t.c.h.)

How many neutrons does an element have if its atomic number is 40 and its mass number is 156?

The us economy received all of the following benefits as a result of technological advancements during industrialization except