amt x % ___ = amt ___
How many milliliters of each should be used to make 140 mL of a 35% acid solution. Let x = the number of mL of the 60% acid solution.
A.) Write an equation to answer this question
B.) Solve the equation
C.) Write the answer to the equation.
2006-12-26 19:08:23 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A) Balance of solute:
(60%)x = (35% )140
B) x = 81.667 mL
C) 81.667 mL of the 60% acid solution and (140-81.667) mL of water should be used.
2006-12-26 19:28:27 · answer #1 · answered by sahsjing 7 · 0⤊ 0⤋
Write An Equation To Answer this Question. The Best Why To Answer This Is To Add Then Subtract.
2006-12-27 03:13:51 · answer #2 · answered by Sarah J 1 · 0⤊ 1⤋
A. 140*0.35 = x/0.6
do B and C yourself
2006-12-27 03:15:14 · answer #3 · answered by Anonymous · 0⤊ 1⤋
0.6x = 140(0,35)
0.6x = 49
0.6x/0.6 = 49/ 0.6
x = 81.66666667
x = 81.67 ml rounded to two decimal places.
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2006-12-27 07:09:43 · answer #4 · answered by SAMUEL D 7 · 0⤊ 1⤋