La absorción de un medicamento (M) esta descrita por: 2M -- A + B
La reacción tiene una constante de velocidad 5,20x10-3 L/µgh y es de segundo orden
con respecto a M. Cuánto tardará en iniciar su efecto terapéutico, si se parte de una
concentración inicial de 5000µg/L y se requiere que su concentración en sangre llegue
a sr de 780 µg/L (en minutos)

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%