2006-09-18 18:51:47 · 6 answers · asked by Grape Drink! its purple. 2 in Science & Mathematics ➔ Mathematics
70 ml. You want 7 ml to be whatever the solution is of. So 70 ml of the 10% solution + 30 ml of water.
2006-09-18 18:54:23 · answer #1 · answered by Master Maverick 6 · 1⤊ 0⤋
Master Maverick is obviously correct. With 70 ml of the 10% soln you have 7 ml of the 100% solution. By adding 30 ml more of water you get 100 ml of 7%.solution!!
2006-09-19 05:37:53 · answer #2 · answered by Manindomb 2 · 0⤊ 0⤋
70 ml of the 10% solution is needed.
2006-09-19 01:53:58 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Master Maverick is correct. If you have 70 ml of the 10% soln it is still a 10% soln. It has to be diluted to get it to 7%.
2006-09-19 02:04:32 · answer #4 · answered by njl433 2 · 0⤊ 0⤋
I'd go with Master Maverick too. You need to dilute the 70ml of the origial solution with 30ml of the solvent to get the 100ml - 7%
2006-09-19 03:53:08 · answer #5 · answered by islamomt 2 · 0⤊ 0⤋
(100 ml * 7 %) / 10% = 70 ml
2006-09-19 01:59:42 · answer #6 · answered by ooowen 3 · 0⤊ 0⤋