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Video instructions and help with filling out and completing Who 8850 Form Solutions

Instructions and Help about Who 8850 Form Solutions

Calculate the molarity of a solution prepared by dissolving 9.8 moles of solid NaOH the sodium hydroxide in enough water to make three point six two liters of solution define molarity you take moles of solute and divide it by liters of solution so to set our equation up here we have molarity equals moles of solute sodium hydroxide is the solute here because it's getting dissolved in water and we have nine point eight moles of that divided by liters of solution which is three point six two liters right here so find molarity nine point eight divided by three point six two round the answer to two significant figures because I have nine point eight up here and I get two point seven one should the units be four this when you find molarity the final answer is in units of molar capital M so this two point seven molar but what two point seven molar really means is that there are two point seven moles of NaOH of the solute for every one litre of the solution so two point seven molar but don't forget that that means two point seven moles for each one liter of this solution up here you dissolve 152 point five grams of cucl two that's copper chloride in water to make a solution with a final volume of 2.25 liters what is its molarity so for molarity as you know we want to take moles of solute divided by liters of solution cucl two copper chloride is our solute in this case because it's getting dissolved in the water but the problem doesn't tell us how many moles of copper chloride we have it tells us how many grams of copper chloride we have so 150 two point five we can't...

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