Question

what is the mass of 18 atoms of hydrogen when the mass of an atom of hydrogen is 1.008 u?​

Answer 1

Answer:

The 18 grams of hydrogen gas is equal to moles of hydrogen two. Since 1 mole is equal to 6.022 times 10^23or that substance, which is Avogadro's Number. We do Avogadro's Number times 9 moles, so we get 5.420times 10^24 hydrogen two molecules in 18 grams of hydrogen gas