how many atoms of hydrogen are present in 6.23 grams of hydrogen? put your answer in scientific notation?
回答 (1)
2016-10-06 9:18 am
Molar mass of H atoms = 1.0 g/mol
No. of moles of 6.23 g of H atom = (6.23 g) / (1.0 g/mol) = 6.23 mol
1 mole of H atoms contains 6.023 × 10²³ H atoms.
No. of H atoms = (6.023 × 10²³ H atoms/mol) × (6.23 mol) = 3.75 × 10²⁴ H atom
No. of moles of 6.23 g of H atom = (6.23 g) / (1.0 g/mol) = 6.23 mol
1 mole of H atoms contains 6.023 × 10²³ H atoms.
No. of H atoms = (6.023 × 10²³ H atoms/mol) × (6.23 mol) = 3.75 × 10²⁴ H atom
收錄日期: 2021-04-20 16:35:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161005210359AA5S5uW