A pharmacist has a 12% solution of boric acid and a 20% solution of boric acid. How much of each must he use to make 80 grams of a 15% boric acid solution

Explanation:

Call x the amount of 12% boric acid solution to be used.

Since he wants to make 80 grams of solution, the amount of 20% boric acid solution to be used is 80 - x.

The final solution is 15% concentrated.

Now you have can write your equation:

Solve:

That is 50 grams of the 12% solution of boric acid.

Calculate the amount of the 20% solution of boric acid:

That is 30 grams.

Then, he must use 50g of the 12% solution and 30 g of the 20% solution.

what are the choices?

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.