Gaasimolekulide kontsentratsioon normaaltingimustel

Ülesanne. Ühe mooli gaasi ruumala on normaaltingimustel_{$22 comma 4 space d m cubed.$} Mis on gaasimolekulide kontsentratsioon normaaltingimustel?

Lahendus. Paneme kirja andmed.

Antud:
$V equals 22 comma 4 space fraction numerator d m cubed over denominator m o l end fraction equals 2 comma 24 times 10 to the power of negative 2 space end exponent fraction numerator m cubed over denominator m o l end fraction N subscript A equals 6 comma 02 times 10 to the power of 23 space m o l to the power of negative 1 end exponent minus negative negative negative negative negative negative negative negative negative negative negative negative negative negative n equals ?$

Ühes moolis on Avogadro arv osakesi. Järelikult avaldub gaasimolekulide kontsentratsioon Avogadro arvu ning molaarruumala suhtena. Seega saame gaasimolekulide kontsentratsiooniks normaaltingimustel

$n equals N subscript A over V equals fraction numerator 6 comma 02 times 10 to the power of 23 over denominator 2 comma 24 times 10 to the power of negative 2 end exponent space m cubed end fraction equals 2 comma 7 times 10 to the power of 25 space 1 over m cubed.$

VASTUS: normaaltingimustel on gaasi kontsentratsioon_{$2 comma 7 times 10 to the power of 25 space m to the power of negative 3 end exponent.$}