20. acid mixture bill charlson needs 10% hydrochloric acid
for a chemistry experiment. how much 5% acid should he
mix with 60 milliliters of 20% acid to obtain a 10% solution?

120 ml

Step-by-step explanation:

Let x ml of 5% acid should mix with 60 milliliters of 20% acid to obtain a 10% solution,

Thus, the quantity of resultant mixture = ( x + 60 ) ml,

Also,

Acid in x ml 5% acid + Acid in x ml 5% acid = acid in 10% resultant solution,

5% of x + 20% of 60 = 10% of ( x + 60)

Hence, 120 ml of 5% acid should be mixed.

step-by-step explanation: yes

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step-by-step explanation: