Riley King
11/01/2023 · Primary School

1. La densidad del metanol, un líquido orgánico incoloro que se usa como solvente, es de \( 0.82 \mathrm{~kg} / \mathrm{m}^{3} \). Calcule la masa de 1999.9 mL del líquido.

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Para calcular la masa del metanol, podemos usar la fórmula de la densidad: \[ \text{Densidad} = \frac{\text{Masa}}{\text{Volumen}} \] De esta fórmula, podemos despejar la masa: \[ \text{Masa} = \text{Densidad} \times \text{Volumen} \] Dado que la densidad del metanol es \(0.82 \, \text{kg/m}^3\) y el volumen es \(1999.9 \, \text{mL}\), primero debemos convertir el volumen de mililitros a metros cúbicos, ya que la densidad está en kg/m³. Sabemos que: \[ 1 \, \text{mL} = 1 \times 10^{-6} \, \text{m}^3 \] Por lo tanto: \[ 1999.9 \, \text{mL} = 1999.9 \times 10^{-6} \, \text{m}^3 = 0.0019999 \, \text{m}^3 \] Ahora podemos calcular la masa: \[ \text{Masa} = 0.82 \, \text{kg/m}^3 \times 0.0019999 \, \text{m}^3 \] \[ \text{Masa} \approx 0.001639818 \, \text{kg} \] Para convertir la masa a gramos (ya que \(1 \, \text{kg} = 1000 \, \text{g}\)): \[ \text{Masa} \approx 0.001639818 \, \text{kg} \times 1000 \, \text{g/kg} \approx 1.639818 \, \text{g} \] Por lo tanto, la masa de 1999.9 mL de metanol es aproximadamente **1.64 g**.

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La masa de 1999.9 mL de metanol es aproximadamente 1.64 g.
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