chemistry HELP ASAP
prepare 1L normal saline 0.9% (w/v) NaCl; Mr NaCL=58.5 amu. Calculate M and T of the prepared solution.????
M and T?
0.9% weight by volume means 1 L contains 9 g
so molarity is 9/58.5
0.9% weight by volume means 1 L contains 9 g
so molarity is 9/58.5
Original post by BobbJo
M and T?
0.9% weight by volume means 1 L contains 9 g
so molarity is 9/58.5
0.9% weight by volume means 1 L contains 9 g
so molarity is 9/58.5
Can you please explain the working out?
Original post by Flowerrainbow112
Can you please explain the working out?
0.9% weight by volume means
1L = 1000 cm3 contains 0.9/100 x 1000 = 9 g so molarity is 9/58.5
prepare 500g 1% cuso4 solution, using blue vitrol, cuso4, 5h20, mr cuso4 =160 amu mr cuso4 . 5h20= 250 amu
How would this be worked out?
How would this be worked out?
Original post by Flowerrainbow112
prepare 500g 1% cuso4 solution, using blue vitrol, cuso4, 5h20, mr cuso4 =160 amu mr cuso4 . 5h20= 250 amu
How would this be worked out?
How would this be worked out?
blue vitrol?
"cuso4, 5h20" you mean CuSO4.5H2O?
what have you tried
Im not sure I'm confused on how to work it out
Original post by Flowerrainbow112
Im not sure I'm confused on how to work it out
post the actual question
anyway if you need 500 g of 1% solution
we can assume solution has density 1gcm^-3
so we have 500 cm3 of solution
1% w/v solution so mass of CuSO4.5H2O = 5 g
so molarity is 5/250 M
if you have CuSO4, then mass of CuSO4 = 5 g
then molarity is 5/160 M
How would this question be answered; What is M and % of H2SO4 solution with T=0.025
Original post by Flowerrainbow112
How would this question be answered; What is M and % of H2SO4 solution with T=0.025
dont know what is T
how would we just work out M? the question just say What is M and % of H2SO4 solution with T=0.025
Original post by Flowerrainbow112
how would we just work out M? the question just say What is M and % of H2SO4 solution with T=0.025
again your terminology is unclear. what is T? also post your attempt. this isnt a do-your-homework website
Original post by Flowerrainbow112
how would we just work out M? the question just say What is M and % of H2SO4 solution with T=0.025
It's hard to know how to help if we don't know what the letters "M" and "T" mean. At the moment, the question looks like gibberish to me. It'd be nice to know what units "T" is in too.
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