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8.8 g propan (C_(2)H_(8)) 126 g nitrik asit (HNO_(3)) 49 g fosforik asit (H_(3)PO_(3)) 3.6 g su (H_(2)O) 24g oksijen gazi (O_(2)) ve 42 g azot (N_(2)) kaç moldür?

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8.8 g propan (C_(2)H_(8)) 126 g nitrik asit (HNO_(3)) 49 g fosforik asit (H_(3)PO_(3)) 3.6 g su (H_(2)O) 24g
oksijen gazi (O_(2)) ve 42 g azot (N_(2)) kaç moldür?

8.8 g propan (C_(2)H_(8)) 126 g nitrik asit (HNO_(3)) 49 g fosforik asit (H_(3)PO_(3)) 3.6 g su (H_(2)O) 24g oksijen gazi (O_(2)) ve 42 g azot (N_(2)) kaç moldür?

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Perihan
Kıdemli · 12 yıl öğretmeni
Uzman doğrulaması

Cevap

Pour déterminer le nombre de moles de chaque substance, nous devons d'abord convertir les masses en moles en utilisant les masses molaires correspondantes.<br /><br />1. Propan (C3H8):<br />Masse molaire du propan = 3(C) + 8(H) = 3(12,01 g/mol) + 8(1,008 g/mol) = 36,03 g/mol + 8,064 g/mol = 44,094 g/mol<br />Nombre de moles de propan = 8,8 g / 44,094 g/mol = 0,1996 mol<br /><br />2. Nitrik acide (HNO3):<br />Masse molaire du nitrik acide = 1(H) + 1(N) + 3(O) = 1(1,008 g/mol) + 1(14,007 g/mol) + 3(16,00 g/mol) = 1,008 g/mol + 14,007 g/mol + 48,00 g/mol = 63,015 g/mol<br />Nombre de moles de nitrik acide = 126 g / 63,015 g/mol = 1,992 mol<br /><br />3. Acide phosphorique (H3PO3):<br />Masse molaire de l'acide phosphorique = 3(H) + 1(P) + 3(O) = 3(1,008 g/mol) + 1(30,97 g/mol) + 3(16,00 g/mol) = 3,024 g/mol + 30,97 g/mol + 48,00 g/mol = 82,994 g/mol<br />Nombre de moles d'acide phosphorique = 49 g / 82,994 g/mol = 0,5906 mol<br /><br />4. Eau (H2O):<br />Masse molaire de l'eau = 2(H) + 1(O) = 2(1,008 g/mol) + 1(16,00 g/mol) = 2,016 g/mol + 16,00 g/mol = 18,016 g/mol<br />Nombre de moles d'eau = 3,6 g / 18,016 g/mol = 0,200 mol<br /><br />5. Oxygène gazeux (O2):<br />Masse molaire de l'oxygène gazeux = 2(O) = 2(16,00 g/mol) = 32,00 g/mol<br />Nombre de moles d'oxygène gazeux = 24 g / 32,00 g/mol = 0,750 mol<br /><br />6. Azote (N2):<br />Masse molaire de l'azote = 2(N) = 2(14,007 g/mol) = 28,014 g/mol<br />Nombre de moles d'azote = 42 g / 28,014 g/mol = 1,500 mol<br /><br />Donc, le nombre de moles de chaque substance est:<br />- Propan: 0,1996 mol<br />- Nitrik acide: 1,992 mol<br />- Acide phosphorique: 0,5906 mol<br />- Eau: 0,200 mol<br />- Oxygène gazeux: 0,750 mol<br />- Azote: 1,500 mol
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