When 1-bromopropane is exposed to magnesium, followed by ethanal (a 2-carbon aldehyde) and then aqueous acid, what is the resulting product

Hydrogen-2 is also known as deuterium as well as hydrogen-3 is known as tritium hydrogen-1 is our common hydrogen isotope a sample hydrogen gas has 99% hydrogen -1 ,0.8% deuterium , and 0.2% tritium what is the average atomic mass of this mixture of isotope to the thousands place