At the Shanghai World Expo, 100 fuel cell sightseeing vehicles were in the Expo site. They drank hydrogen and produced water, realizing zero emission It is necessary to add 30% KOH solution into the fuel cell. Now there are 10kg 10% KOH solution, 14kg KOH solid and proper amount of distilled water. How many kg of 30% KOH solution can be prepared?

At the Shanghai World Expo, 100 fuel cell sightseeing vehicles were in the Expo site. They drank hydrogen and produced water, realizing zero emission It is necessary to add 30% KOH solution into the fuel cell. Now there are 10kg 10% KOH solution, 14kg KOH solid and proper amount of distilled water. How many kg of 30% KOH solution can be prepared?

10 kg 10% KOH solution contains solute, and the mass of KOH is 0
10*10%kg=1kg
Now the average mass of KOH is 14 = 1 = 15kg
There is enough distilled water
It is assumed that 30% KOH solution can be prepared
Then x * 30% = 15
X = 50
That is, 30% KOH solution of 50 kg can be prepared