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4
questions
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Preparing aqueous solution of ethanol [closed]
You need to prepare $\pu{250.0 mL}$ of an aqueous solution of ethanol in the concentration will be $\pu{0.500 mol L-1}$. You have $\pu{100 mL}$ of a commercial solution of ethanol in water $(35.0\% \,...
0
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1
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Calculate molarity given density and mass percentage [closed]
Problem
Calculate molarity of a solution of $\ce{H2SO4}$ with density $\pu{1.198 g/cm3}$ and containing $27~\%$ mass of $\ce{H2SO4}.$
Answer
My approach
I converted the density to g/l. Then i took ...
3
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8
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Why is the specific gravity of 0.9 % saline 1.0046?
Medical Normal Saline (0.9% Saline) contains 9 g of salt dissolved in 1000ml of water.
Hence a litre of NS should weigh 1.009 kg.
Hence its specific gravity should be 1.009, but it’s only 1.0046.
(I'...
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4
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3
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How to convert from w/w% to molarity?
After reading a number of explanations about it after googling, I'm a bit confused on this. Some explanations are doing it using a solution density, others aren't, though most are. On one site it's ...
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