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This is a standard algebra word problem so I will try to give lots of details since it can be generalized to many situations. Let us call the NH3OH just N for short. You start with a given volume say V of that and it is 25 %, now you want to make it 10%. To make this simpler, I can going to assume a volume but we can go back and make that volume arbitrary after you see how to do the problem So we have 100 cc of 25% N. That mean to find out how much N we have ( how much of the actual chemical in the solution) we multiply .25x100=25 grams. Now we want 10 percent solution. Call the amount we need to add by the letter A So the final total amount of liquid is 100+A since we start with 100 cc and add A. Now A has NO N in it at all. So we have two equation 100+A=Total volume, call it TV and the amount of N in the total volume is 25 mg since it all come from the original No we want 10 percent of TV to equals 25 since that is all the available N we have. That is to way, we are adding water and a fixed amount of N and we need the TV x .1=25 So TV =250 ml. Since we started with 100, we must have added 150 cc of water. Let us check we have 250 ml of fluid with 25 mg of N and 25/250=.1 that is 10% . Now the only part that used the 100 cc was to figure out how many grams of N we had So we could call the initial volume IV and we have .25IV of N, the rest of the computation will now be the same. We could have TV = Initial volume plus what we added and if we are doing a dilution with water, the total amount of chemical in TV will always be the initial volume x the percent solution. We can further generalize to any percent solutions, do you see how?

Q: How do you dilute 25 percent NH3OH TO 10 percent?

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Parsing the question: What percent of 10 percent of 50 is 25 percent of 100? What percent of 10 percent of 50 is 25? What percent of 5 is 25? Answer: 500%

25 percent of 10 gallons is 2.5 gallons.

2.5 is 10% of 25

10 percent of 250 is 25.

$2.50 Two dollars and fifty centsWe need to find 25 percent of 10 dollars.25 percent of 10 dollars = 25% of 10 = (25/100)*10(25/100)*100 = 0.25 * 10=2.5 dollars.We know that 0.5 dollars =50 cents.Therefore 2 dollars and 50 cents.25 percent of 10 dollars is 2 dollars and 50 cents.

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To dilute a 25% glucose and glutamic acid solution, you would mix the solution with an appropriate amount of water. The exact amount of water needed will depend on the desired final concentration of the solution. Calculate the amount of water needed based on the volume and concentration of the original solution.

25% of 10 = 10*25/100 = 2.5

Parsing the question: What percent of 10 percent of 50 is 25 percent of 100? What percent of 10 percent of 50 is 25? What percent of 5 is 25? Answer: 500%

10 out of 25 is 40 percent.

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39 % of 25 is: 4 x (10% of 25) minus (1% of 25).

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25%>10%

10 divided by 25= 0.4 0.4 multiplied by 100=40 your answer is 40 percent

10 percent of 250 is 25.

2.5 is 10% of 25

10% of 25% = 0.1*0.25 = 0.025 = 25/1000 = 1/40