STACY

NEED TO KNOW ABOUT THE LOST COLONY IN 1585

Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (c) molarity assume the density of the solution is equal...

how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide...

Posted by STACY on Monday, December 13, 2010 at 7:56pm. Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (...

I Need Someone to check my essay for me and give me some input please.

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Soooo Moles= MxL (0.100M)(0.250L)=0.025 than multiply moles by molar mass (0.025)(105.988)= 2.65g So my answer is 2.65g but the book says it's 1.32g? What am I overlooking.....man I hate chemistry =(

I surely do, and don't call me Shirley! LOL yessss i'm sorry I don't know much about chemistry that's why i'm here!! 1. Mass percent= grams solute/100solution 1.27g/250.0mL = 5.08x10^-03 is my answer but the correct one is 0.505% 2. Mole fraction= moles s...

Thanks! and No Stacy is not my real name, although Shirley is my mothers name LOL!

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