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Topic: Molar Mass  (Read 287 times)

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Offline Spitzchan

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Molar Mass
« on: November 27, 2024, 07:13:07 AM »
I'm not understanding these two questions
Calculate the number of moles of:
1) hydrogen molecules in  20g of hydrogen gas (H2)
2) hydrogen atoms in  20g of hydrogen gas (H2)

Please help me 😭🙏

Offline Hunter2

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Re: Molar Mass
« Reply #1 on: November 27, 2024, 08:14:06 AM »
1 mol hydrogen gas, it contains H2 molecules has a molar mass of about 2g/mol. Check the table of the periodic system of elements PSE.
The question ask how many mol you have if 20 g H2 is present.
And also how many mol of H atoms. One molecule contain two H atoms,

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