A chemistry intern needs 20 liters of a 15% sodium solution. He decided to mix a 10% solution with a 30% solution. How many liters of a 10% solution and a 30% solution does he need.

Question

ronaldo7 · Answer

may I ask how did you set that up please

anonymous · Answer

its wrong

ronaldo7 · Answer

So how is it wrong levinelevine


no problem

anonymous · Answer

im solving it, is it 20% in mass or in mole? or it doesnt say?

ronaldo7 · Answer

the question is all I have for in
formation

anonymous · Answer

ok, ive got it. here you go

anonymous · Answer

first. we have a 2 equation with 2 variable system. the fist equation can be determined (x+y)=20 where x is the liters of solution 10% and y 30%. then the second equation is 0.1*X+0.3Y=20*0.15. solving this two equation will give the answer. do you know how to do this?

anonymous · Answer

what was ur answer @AIK ? I got 5liter of 30% and 15 of 10%

ronaldo7 · Answer

hold on please

anonymous · Answer

yes

anonymous · Answer

Well clearly the intern is unsophisticated and does not know what he is doing

anonymous · Answer

that is what I got, so I was right after all.
Just was not sure since I am pretty tired and did it in my head half dead.

ronaldo7 · Answer

what us .15*20

ronaldo7 · Answer

is*

anonymous · Answer

its the 20 liters of Na multiplied by its concentration in fraction (15%/100)=0.15

anonymous · Answer

Dude levin you are smart

anonymous · Answer

thanx @Barcelona20012 :)

anonymous · Answer

Excuse me Ronaldo Barcelona is clearly better than Real Madrid therefore you may want to change your name

ronaldo7 · Answer

levine i am confused here is what i got so far|dw:1359006925576:dw|