Question

Doreen Schmidt is a chemist. She needs to prepare 32 ounces of a 9% hydrochloric acid solution. Find the amount of

Answer 1

Answer:

See below

Step-by-step explanation:

She needs 32 ounces finshed product

  x = 16 % amount     amount of acid  = .16x

  then (32-x) = 8% amount    amount of acid = .08(32-x)

      final product 9% acid   =    .09 (32)

.16x      +      .08 ( 32-x)    = .09(32)    

   solve for x = 16% amount = 4 ounces      8% then is  28 ounces