Question

Find masses of Hydrogen gas and 2 Hydrogen atoms.

Answer 1

Answer:

A mole is a convenient counting unit whenever one is dealing with numbers of atoms or molecules. It is equal to Avogadro's number (NA), namely 6.022 x1023. If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams

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Answer 2

Answer:

so 1 mole of hydrogen weighs 2 grams . ( from the mass number of hydrogen,from the periodic table

now just divide : (216023*10^23) this is the approximate mass of the H molecule

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