Author Question: How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons ... (Read 171 times)

littleanan · **on:** Jul 28, 2018

How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons and protons? Think of your answers in terms of order of magnitude.
a. about a decade
b. about a century
c. about a thousand years
d. since Aristotle

Question 2

Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule measures approximately 2.75 1010 m in length.
a. 2E+15
b. 5E+22
c. 4E+14
d. 6E+41