Let's assume you have 1 L of the 37% solution by volume of chemical A. So your solution would contain 0.37 L of A & 0.63 L of water.
0.37 L of A / (0.37 L of A + 0.63 L of water) = 37% solution of A
Obviously in order to dilute the solution to 2% we have to add water. Now we need to figure out how much. We'll call it X. So you set up the ratio as follows & solve for X.
0.37 / (0.37 + 0.36 + X ) = 0.02
0.37 = 0.02 (1.00 + X)
0.37 = 0.02 + 0.02X
0.37 - 0.02 = 0.02 + 0.02X - 0.02
0.35 = 0.02X
0.35/0.02 = X
X = 17.5, so you would have to add 17.5 L of water to the originial 37% solution to dilute it to 2%.
Obviously this answer will change depending on how much of the 37% solution you have to start with but the procedure to figure it out is still the same.
You stare at it
A. 16 of 18 percent and 2 of 9 percent b. 14 of 18 percent and 4 of 9 percent c. 16 of 9 percent and 2 of 18 percent d. 14 of 9 percent and 4 of 18 percent
74 37% of 100 = 37 200 = 2 * 100 (37% of 200) = 2 * (37% of 100) Again, 37% of 100 = 37 37 * 2 = 74
0.37537 1/2%= 37 + (1 ÷ 2)%= 37 %+ 0.5%= 37.5%/100%= 0.375 in decimal
37 1/2
About 80ml of water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution.
2%
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To make a 2% solution from a 25% solution, you need to dilute it. Let x ml be the amount of water needed. Using the equation for mass balance: 0.25(40) = 0.02(40 + x), solve for x to find that x = 875 ml of water needs to be added.
A. 16 of 18 percent and 2 of 9 percent b. 14 of 18 percent and 4 of 9 percent c. 16 of 9 percent and 2 of 18 percent d. 14 of 9 percent and 4 of 18 percent
A 3 percent solution is 1.5 times as strong as a 2 percent solution.
74 37% of 100 = 37 200 = 2 * 100 (37% of 200) = 2 * (37% of 100) Again, 37% of 100 = 37 37 * 2 = 74
To make a 2% sodium hypochlorite solution from a 12% solution, you can set up the equation: 12% solution * x litres = 2% solution * 100 litres Solving for x, you get: x = (2% solution * 100 litres) / 12% = 16.67 litres Therefore, you would need 16.67 litres of the 12% sodium hypochlorite solution to make 100 litres of a 2% solution.
2 percent bromine solution typically has a reddish-brown color.
It's 74%. The easiest way to convert a fraction to a percent is to make the denominator 100, because then the numerator will be your percent. So to make 37/50 have a denominator of 100, you have to multiply both numbers by 2 (because 50*2 is 100). That gives you a new fraction of 74/100, so 74% is your percentage.
371/2 = 3,750 %
0.37537 1/2%= 37 + (1 ÷ 2)%= 37 %+ 0.5%= 37.5%/100%= 0.375 in decimal