Hydrogen chloride gas (HCI(g)).
So it would be the first one
Hope this helps! :)
~Zain
Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed most likely due to a shockwave form a nearby exploding start called a supernova
The answer is B. 19 <span>✔
Its 19 because h</span><span> (atomic mass is4.02643(11) u) contains one proton and three </span>neutrons<span> in its nucleus. It is a highly unstable </span>isotope<span> of hydrogen. It has been synthesised in the laboratory by bombarding tritium with fast-moving deuterium nuclei.</span>
PV = nRT
n = PV/RT
n = (.117)(3)/(.0821)(273+80)
n = .351/28.98 = 0.012 moles
