Se dispone de 300 g de una solución acuosa que contiene 60 g de NaCl. Calcular su concentración en: A- gramos de soluto por 100g de solución(%m/m)
B- gramos de soluto por 100g de solvente

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.