how many molecules are in 26.1 grams of Sr?
回答 (2)
2016-06-14 6:29 am
Molar mass of Sr = 87.62 g/mol
No. of moles of Sr = (26.1 g) / (87.62 g/mol) = 26.1/87.62 mol
1 mole of Sr contains 6.022 × 10²³ Sr atoms.
No. of atoms = (26.1/87.62 mol) × (6.022 × 10²³ atoms/mol) = 1.79 × 10²³ atoms
(Sr contains atoms, but not molecules. From this view, there is 0 molecule.)
(If you view atom as monatomic molecules, there are 1.79 × 10²³ molecules.)
No. of moles of Sr = (26.1 g) / (87.62 g/mol) = 26.1/87.62 mol
1 mole of Sr contains 6.022 × 10²³ Sr atoms.
No. of atoms = (26.1/87.62 mol) × (6.022 × 10²³ atoms/mol) = 1.79 × 10²³ atoms
(Sr contains atoms, but not molecules. From this view, there is 0 molecule.)
(If you view atom as monatomic molecules, there are 1.79 × 10²³ molecules.)
2016-06-14 12:28 am
I don't really give a **** right now
收錄日期: 2021-04-18 14:59:41
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