Answer:
2 g/mol.
Step-by-step explanation:
The molar mass of a substance is defined as the mass of one mole of the substance. One mole of any substance contains Avogadro's number (6.022 x 10^23) of particles.
For hydrogen gas (H2), the molar mass is the sum of the atomic masses of two hydrogen atoms, which is approximately 2.016 grams per mole (g/mol). Therefore, the mass of 1 mole (molar mass) of H2 is approximately 2 grams.
note: ask to chemistry next time :D
ALLEN