se an preparado 200 ml de una ecuación que contiene 9.30 gramos de hemoglobina. la presión osmotica de la solución es de 0.71 atm a 25 grados celcium. calcula la masa molar de la hemoglobina
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Ответ:
La masa molar de la hemoglobina sería 1600.4 g/mol
Explanation:
Buen problema sobre la presión osmótica.
La formula es: π = M . R . T
Done π representa la presión osmótica, R, la constante de los gases ideales y T la temperatura en K.
Convertimos la T°C en K → 25°C + 273 = 298K
Reemplazamos en la formula: 0.71 atm = M . 0.082 L.atm /mol.K . 298K
(0.71 atm / (0.082 L.atm /mol.K . 298K) = M
0.0291 mol/L = M
Con ese reemplazo en la ecuación de la presión osmótica ya encontramos la molaridad de la hemoglobina. Sabiendo que molaridad es mol/L, y nuestra solución tiene 200mL de volumen, primero pasamos 200 mL a L
200 mL . 1L/100mL = 0.2 L y ahora reemplazamos para saber los moles de soluto.
0.2L . 0.0291mol/L = 5.81×10⁻³moles.
Como tenemos la masa de hemoglobina y la masa molar es g/mol, simplemente dividimos:
9.30 g/5.81×10⁻³mol = 1600.4 g/mol
Ответ:
D sand and water
Explanation:
Since water is less dense than sand it could be easily separated if you go to the ocean that’s why the water is at the bottom of the sand but on above the sand so it will be able to separate easily.