Answer:
1.
meteorology A line drawn on a map or chart connecting places of equal or constant pressure.
2.
nuclear physics Either of two nuclides of different elements having the same mass number.
3.
thermodynamics A set of points or conditions at constant pressure.
Hello!! Your atomic mass will be found at the bottom of each element. The atomic mass of Nitrogen is 14.007. Have a great day!!
Get a magnet in a bag (inside out) and move the magnet all over the sand/iron and you can collect all the iron and turn the bag right side out and zip up the bag. Now you have the sand and iron separated and it will be harder to accidentally mix them later.