the mass by mass percentage of a solution is 20%. find the mass of the solute dissolved in 500g of solution

Explanation:

Hello,

In this case, by considering the mathematical definition of by mass percentage of a solute as shown below:

We are able to compute the mass of the solute in a 20% solution having 500 g of solution as follows:

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when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

elements make up everything, and they combine to make compounds.

the answer is c