Mengde

Det mengde mä det formeltiaken $n$ as en grünjmiat uun't SI-süsteem. Hat sait, hüföl elementaardialen uun en objekt san. Sok elementaardialen kön atoomen, moleküülen of ionen wees.

Tekst üüb Öömrang

Füsikaalisk grate

Nööm

Mengde

Formeltiaken

$n$

Gratin- an Ianhaidensüsteem	Ianhaid	Dimension
SI-süsteem	mol	N

Miat

Det miat för't mengde as Mol, det as en SI-grünjmiat. Uun ian Mol (n = 1) san amanbi 6,022 · 10²³ (Avogadro-taal) dialen.

{\begin{aligned}n(X)\cdot N_{\mathrm {A} }&=N(X)\\\Leftrightarrow n(X)&={\frac {N(X)}{N_{\mathrm {A} }}}\end{aligned}}

Bispal: Weeder wäächt 18 gram per Mol. Do san 9 gram weeder:

n_{\mathrm {H_{2}O} }={\frac {m_{\mathrm {H_{2}O} }}{M_{\mathrm {H_{2}O} }}}=\mathrm {9\;g \over {18\;{g \over mol}}} =0{,}5\,\mathrm {mol}

Bispal: Ian Mol faan en gas namt en rüm faan 22,4 liter iin. Hüföl Mol san 5 l sürstoof?

n_{\mathrm {O_{2}} }={V_{\mathrm {O_{2}} } \over {V_{\mathrm {m} }}}={{5\,\mathrm {l} } \over {22{,}4{\mathrm {l \over mol} }}}=0{,}22\,\mathrm {mol}

Bispal: Dü heest N = 10²⁵ elementaardialen.

n={\frac {N}{N_{\mathrm {A} }}}={\frac {10^{25}}{6{,}022\cdot 10^{23}\;\mathrm {mol} ^{-1}}}=16{,}606\;\mathrm {mol}

Bispal: Hüföl Mol Natriumchlorid san uun 0,22 liter faan en 0,6-molaar NaCl-liasang?

n_{\mathrm {NaCl} }=c_{\mathrm {NaCl} }\cdot V=0{,}6\;{\frac {\mathrm {mol} }{\mathrm {l} }}\cdot 0{,}22\;\mathrm {l} =0{,}132\;\mathrm {mol}

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