Asolution is created by dissolving 11.0  grams of ammonium chloride in enough water to make  305  ml of solution. how many moles of ammonium chloride are present in the resulting solution?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

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

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.