1_Una botella de vinagre contiene 5 gramos de ácido acético por cada 100 gramos de agua. Calcular la concentración en fracción molar (x) y molalidad (m)
2_¿Que cantidad de soluto y solvente se necesitan para preparar 400 gramos de solución al 25%m/m

Por favor responder con el desarrollo de los problemas

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn