Calculate the liters of ammonia gas produced in the reaction of 6.2 x 1024 molecules of nitrogen with excess hydrogen
N2 + 3 H2 → 2 NH3

It will be b hydrogen

Most elements have more than one naturally occurring isotope. as you learned previously, the atoms of those isotopes have the same atomic number (number of protons), making them belong to the same element, but they have different mass numbers (total number of protons and neutrons) giving them different atomic masses. so which mass is put on the periodic table for each element? is it the most common isotope’s mass? the heaviest mass? this activity will answer that question.

The correct answer is 20 protons, 20 electrons, and 21 neutrons