It won't give u exactly 30 more like 35 vol if u mix 20 and 40. If u want closer to 30 put a little more 20 then 40...
Your dimensions are for a square. You need one more dimension for a box.
It is: (20*10)-(20+10) =170
7 liters of a 20% acid solution consists of 1.4 liters of acid (20% of the total volume) mixed with 5.6 liters of water (80% of the total volume). The amount of acid isn't going to change in the new solution. You are just going to add enough water to make it a 10% solution instead of a 20% solution. So it will be more dilute. That means that 1.4 liters of acid will represent 1/10 of the volume of the new solution. So the total volume of the new solution will be 10 x 1.4 or 14 liters. The amount of water in the new solution will be 14 - 1.4 = 12.6 liters. That is a difference of 12.6 - 5.6 = 7 liters from the amount of water you started with. So you need to add 7 liters of water to the original 20% solution to make it a 10% solution. This makes sense because if you double the amount of the mixture from 7 liters to 14 liters and the amount of acid is unchanged, the solution will be half as strong.
2 x 10 = 20 2 + 10 = 12
2 and 10. 2*10=20 2+10=12
To make 10 volume developer from 20 volume developer, you can mix equal parts of 20 volume developer and distilled water. For example, mix 1 part of 20 volume developer with 1 part distilled water to create 10 volume developer.
You can mix equal parts of 20 volume developer and 0 volume developer to make a 10 volume developer solution. The resulting mixture will have an average volume of 10 developer.
Equal parts of 10 & 30 V. developer will yield 20 v.
Equal parts of 10 & 30 V. developer will yield 20 v.
To create a 30 volume cream developer, you will need to mix equal parts of 10 volume cream developer and 20 volume cream developer. Therefore, you mix 1 part 10 volume developer with 1 part 20 volume developer to achieve a 30 volume solution.
Mixing 10 Volume developer and 40 volume developer will never make a 20 volume regardless of how much is mixed. In order to make a 20 volume, equal parts of 10 and 30 volumes will need to be mixed. Mixing 10 and 40 will make 30 volume.
To achieve a 30 volume developer solution, you can mix equal parts of a 20 volume developer and a 40 volume developer. This will result in a 30 volume developer solution.
To dilute 20 volume developer to 10 volume, mix equal parts of 20 volume developer and a neutral liquid, such as distilled water or a low-volume developer. This will reduce the concentration of the developer and create a 10 volume solution for gentler hair processing. It's important to measure accurately to ensure the desired volume is achieved.
It is not recommended to double the volume of developer to achieve the desired strength. Using a 10-volume developer when a 20-volume developer is needed can result in uneven hair color or ineffective processing. It is best to use the correct developer volume for the hair color you are using.
Mixing 1 oz of 20 volume developer with 1 oz of 10 volume developer results in an effective volume developer somewhere between 10 and 20 volumes. This blend may provide slightly more lift than a 10 volume developer alone but less lift than a 20 volume developer. It is important to consider the hair's condition and desired outcome before using this mixture.
Equal parts of 10V. Developer + 20V. Developer= 15 Volume Developer
20 volume