mbonham481
12.03.2021 •
Chemistry
Se preparo una solución midiendo 8.5ml de reactivo de acido fosfórico (pureza 85.05% en volumen y densidad de 1.88g/ml), la cual se aforo a un volumen de 250ml con agua destilada. Calcula la concentración normal del acido fosfórico.
Utiliza los siguientes datos de pesos atómicos: H=1.0079, O= 15.999, P= 30.973g/mol
Realiza los cálculos en tu cuaderno y maneja 4 cifras significativas después del punto decimal para realizar todos los cálculos y resultado. En este examen solo incluye el valor numérico de la concentración con sus 4 cifras significativas después del punto decimal, no las unidades.
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Ответ:
B. 45k
The human body is about 60 to 70% water.
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