A chemistry student needed to prepare 250 mL of 0.147 M CaCl2 for her experiment. She has a stock solution in a bottle labeled "0.64 M CaCl2. How many mL of stock CaCl2 she needs to transfer to the 250-mL volumetric flask in order to get the solution she wanted? mL stock CaCl2 solution. Do NOT enter unit. Report your final answer with 3 SFs.

State the formula for density in words and mathematical symbols

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

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?