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Alex777 [14]
3 years ago
8

Atoms of which element have the most valence electrons?  A. Nitrogen (N)  B. Sodium (Na)  C. Oxygen (O)  D. Calcium (Ca)

Chemistry
1 answer:
evablogger [386]3 years ago
6 0
C.oxygen
It has 6 valence electrons
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El suero fisiológico tiene una concentración de 8,78 gr/lt. Calcula la masa de NaCl que ingresa en el organismo de un paciente a
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Un paciente que recibe suero fisiológico a una velocidad de infusión de 1 gota = 0,05 ml por segundo recibirá en 5 horas 790 grs de NaCl, tomando en cuenta que la solución acuosa de suero fisiológico contiene 0,878 grs/mL de NaCl.

Explicación

Los datos que se tienen son:

  • Concentración de NaCl 0,878 grs/ml
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  • Velocidad de infusión 1 gota/ seg = 60 gotas/ min = 3 ml/min
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Ya establecidas las respectivas conversiones se trata de determinar qué volumen de suero fisiológivo se ha infundido al paciente en 5 horas

Si se infunden 3 ml cada minuto, ¿Cuánto se habrá infundido en 300 minutos?

3 ml ______________ 1 min

X ________________ 300 min

X = (300 min x 3 ml) / 1 min

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Como en 5 horas el paciente ha recibido 900 ml de suero, se determina la cantidad de NaCl que se encuentra en ese volumen de líquido

0,878 grs __________ 1 ml

X ________________ 900 ml

X = (900 ml x 0,878 grs) / 1 ml

X = 790 grs de NaCl

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