Si añadimos 50 gramos de sacarosa (C12H22O11): Determine:
a) moles de Sacarosa
b) Moleculas de Sacarosa
C)Moles de oxigeno
D) Atomos de oxigeno
e) gramos de oxigeno
Respuestas
C12H22O11 + 12 O2 → 12 CO2 + 11 H2O
Mm C12H22O11 = 342 g/mol
O2 = 32 g/mol
Si añadimos 50 gramos de sacarosa (C12H22O11): Determine:
a) moles de Sacarosa
n = m/Mm
n = 50 g / 342 g/mol
n = 0.146 moles de sacarosa
b) Moleculas de Sacarosa
1 mol ----- 6.022 x 10²³ moléculas
0.146 mol ------ x
x = 8.792 x 10²² moléculas de sacarosa
C) Moles de oxigeno
n O2 = 50 g C12H22O11 x 1 mol C12H22O11 x 12 mol O2
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342 g C12H22O11 1 mol C12H22O11
n O2 = 1.754 moles
D) Atomos de oxigeno
átomos de O2 = 12 x 8.792 x 10²² = 1.055 x 10²⁴
e) gramos de oxigeno
g O2 = 50 g C12H22O11 x 1 mol C12H22O11 x 12 mol O2 x 32 g O2
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342 g C12H22O11 1 mol C12H22O11 1 mol O2
g O2 = 56.14