Un compuesto tiene 19.3% de sodio, 26.9% de azufre y 3.8\% de oxígeno, si su masa molar es de 238g / m * o * l * i Cuál es su fórmula molecular?

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?