A0.01 mm thick foil of iron separates a gas containing 1x1028 h atoms/m3 from another chamber containing 6x1022 h atoms/m3 . if the system is operating at 1000 °c and the iron is fcc, calculate (a) the concentration gradient of hydrogen through the foil

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

2b2t

explanation:

2b2t

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

they are called fossil fuels