Answer:
the atomic number of the element with 77 as atomic weight and 55 neutrons is 22
0.000345 in scientific notation is 3.45*10^-4
The answer is A: the PH scale
5.2/ 24.3 = 0.214
0.214 x 2 = 0.428
0.428 x 36.5= 15.6g
Answer:
2
Explanation:
It is going through the air and is moving so that means that it has kinetic energy. But it is also going to go the down, which gives it potential energy.
