how much water should be added to 80g of common salt,so as to obtain 20% salt solution.
2006-08-25 19:14:57 · 11 answers · asked by christine w 2 in Education & Reference ➔ Homework Help
no
2006-08-25 19:16:28 · answer #1 · answered by zedvilla 3 · 0⤊ 2⤋
Nah, just messing with you. Do your own damn homework.
But seriously, it's 400 mL
That's some pretty hard work you got there.
2006-08-26 02:18:09 · answer #2 · answered by Anonymous · 0⤊ 2⤋
common salt=NaCl
molecular weight =23+35.5=58.5 grams
80/x=20/100
x=80*100/20=400ml
2006-08-26 02:28:41 · answer #3 · answered by raj 7 · 0⤊ 0⤋
320mL = 320g when speaking of water.
80g is 20% of 400g so you need the solution to weigh that.
400g sol'n. - 80g solute = 320g solvent
If you erroneously added 400g of water to the 80g of salt
your solution would weigh 480g.
80g is 17% of 480g.
2006-08-26 02:16:47 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Oh I must be really old!! We all had to figure these things out ourselves--best we could do was get on the phone and ask a friend if they got the answer--didn't have thousands of people to ask----
2006-08-26 02:20:47 · answer #5 · answered by fallingstar 4 · 0⤊ 1⤋
400 ml. common salt=NaCl
2006-08-26 03:30:06 · answer #6 · answered by Serendipity 2 · 0⤊ 0⤋
LOL! eliminator00... 20% does NOT equal 0.5. the last time i checked, 0.5 equalled 50%.
2006-08-26 02:22:01 · answer #7 · answered by R-Diz 4 · 1⤊ 0⤋
are you for real?
320 parts
2006-08-26 02:19:45 · answer #8 · answered by knowitall 3 · 0⤊ 1⤋
1kilo gram
2006-08-26 02:16:34 · answer #9 · answered by anshulgupta1988 3 · 0⤊ 2⤋
is it chemistry or mathssss
2006-08-26 02:18:09 · answer #10 · answered by sandy 1 · 0⤊ 2⤋
guess it might be right !
2006-08-26 03:54:50 · answer #11 · answered by Anonymous · 0⤊ 1⤋