You need a 60% alcohol solution. On hand, you have a 240 mL of a 5% alcohol mixture. You also have 90% alcohol mixture. How much of the 90% mixture will you need to add to obtain the desired solution? You will need mL of the 90% solution

Q: What amount of a 80% acid solution must be mixed with a 20% solution to produce 400 mL of a 50%…

A: Topic - percentage and equation in one variable

Q: You need a 70% alcohol solution. On hand, you have a 195 mL of a 20% alcohol mixture. You also have…

A:

Q: You need a 50% alcohol solution. On hand, you have a 585 mL of a 25% alcohol mixture. You also have…

A: 25 %  alcohol mixture means,  100 ml  of solution contains  25 ml  of alcoholso  585 ml  of solution…

Q: A concentrated solution contains 10% salt. How many liters of this solution does Mary need to add to…

A:

Q: You need a 30% alcohol solution. On hand, you have a 30 mL of a 15% alcohol mixture. You also have…

A: We need a 30% alcohol solution. On the other hand, you have 30 mL of a 15% alcohol mixture. You also…

Q: You need a 65% alcohol solution. On hand, you have a 55 mL of a 35% alcohol mixture. You also have…

A: First we assume that x be the amount of the 70% mixture.Then using the data given in the problem…

Q: a pharmacist wishes to mix a solution that is 4% minoxidil. she has on hand 70 ml of a 3% solution…

A: We can express concentration as amount of solute/volume of solution i,e, c = n/v or, n = c × v

Q: what amount of a 60% acid solution must be mixed with a 30% solution to produce 300mL of a 50%…

A: Consider x be the amount of 60% solution in ml then (300 – x) ml 30% solution will be used to…

Q: You need a 30% alcohol solution. On hand, you have a 315 mL of a 15% alcohol mixture. You also have…

A: Here we have to take the concentration equation and solved then to get the answer so I'm providing…

Q: How much water should be added to 30 gallons of a solution that is 70% antifreeze to get a mixture…

A: Given: Pure water=70% antifreeze

Q: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt…

A: Let  the amount of water to be evaporated be x first we have 240 gallons of 3% salt i.e 7.2 gallons…

Q: You need a 50% alcohol solution. On hand, you have a 390 mL of a 40% alcohol mixture. You also have…

A: Allegations and mixture s

Q: You need a 85% alcohol solution. On hand, you have a 70 mL of a 15% alcohol mixture. You also have…

A:

Q: You need a 20% alcohol solution. On hand, you have a 140 mL of a 5% alcohol mixture. You also have…

A:

Q: You need a 65% alcohol solution. On hand, you have a 105 mL of a 15% alcohol mixture. You also have…

A: Given: On hand, you have 105mL of 15% alcohol solution, You also have 80% alcohol mixture.

Q: You need a 75% alcohol solution. On hand, you have a 150 mL of a 70% alcohol mixture. You also have…

A: Let x is the amount of the 85% mixture and we have 150 ml of a 70% alcohol mixture So,    85% of x +…

Q: A pharmacist needs to fill an order for a 3% lidocaine topical cream. However, only 2% and 4%…

A: Let assume quantity of 3% cream = x gm Quantity of 2% cream = 30 gm So quality of 4% cream = (x -…

Q: How many gallons of a 80% antifreeze solution must be mixed with 80 gallons of 20% antifreeze to get…

A: Given: There are two types of solution One contain 80% antifreeze and other contain 20% antifreeze…

Q: You need a 40% alcohol solution. On hand, you have a 420 mL of a 20% alcohol mixture. You also have…

A: Given problem:- You need a 40% alcohol solution. On hand, you have a 420 mL of a 20% alcohol…

Q: You need a 55% alcohol solution. On hand, you have a 440 mL of a 25% alcohol mixture. You also have…

A: We know that, 25% alcohol mixture means, 100ml of solution contain  25ml of alcohol, so 440 ml of…

Q: Pure acid is to be added to a 10​% acid solution to obtain 36L of a 40​% acid solution. What amounts…

A: We need to find the amounts of each acid.

Q: You'need a 55% alcohol solution. On hand, you have a 120 mL of a 50% alcohol mixture. You also have…

A: Needed amount of alcohol solution =55%

Q: How much pure acid should be mixed with 6 gallons of a 50% acid solution in order to get an 80% acid…

A:

Q: Sol Lushen, a chemistry student, has two solutions, solution A and solution B.  Solution A contains…

A: Let the amount of solution A be x  And the amount of solution B be y.

Q: You need a 50% alcohol solution. On hand, you have a 420 mL of a 5% alcohol mixture. You also have…

A: Consider,  You will need x mL of the 85% solution. Then, we have to find the value of x.

Q: You need a 70% alcohol solution. On hand, you have a 240 mL of a 35% alcohol mixture. How much pure…

A: Given that need a 70% alcohol solution and have a 240 ml of a 35% alcohol mixture. Find how much…

Q: You need a 60% alcohol solution. On hand, you have a 320 mL of a 40% alcohol mixture. How much pure…

A: Use the concept of percentage and solve the problem.

Q: You need a 40% alcohol solution. On hand, you have a 240 mL of a 35% alcohol mixture. You also have…

A:

Q: How many gallons of a 60​% antifreeze solution must be mixed with 60 gallons of 20​% antifreeze to…

A: Let the number of gallons of 60% antifreeze be ‘x’.60 gallons of 20% antifreeze and total volume =…

Q: What amount of a  60% acid solution must be mixed with a 30% solution to produce  300 mL of a 50%…

A: To determine the amount of the 60% of the acid solution.

Q: A chemist must mix 10L of a 40%acid solution with some 70% solution to get a 50% solution. How much…

A: A chemist must mix 10L of a 40%acid solution with some 70% solution to get a 50% solution. Let x L…

Q: You need a 50% alcohol solution. On hand, you have a 110 mL of a 10% alcohol mixture. You also have…

A:

Q: What quantity of 80% acid solution must be mixed with a 20% solution to produce 400ml of a 60%…

A: Given we need to form a 400 ml of a 60% solution by mixing 80% acid solution with 20% solution.Let…

Q: How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 60%…

A: Let water to be added be x First we have 100% antifreeze solution

Q: You need a 75% alcohol solution. On hand, you have a 135 mL of a 10% alcohol mixture. You also have…

A:

Q: You need a 70% alcohol solution. On hand, you have a 120 mL of a 55% alcohol mixture. You also have…

A: To Determine: .how much of the 80% mixture will you need to add to obtain the desired solution?…

Q: You need a 45% alcohol solution. On hand, you have a 210 mL of a 35% alcohol mixture. You also have…

A: Let, the amount of solution of the 60% mixture is X ml.Adding 210 ml of 35% mixture,will…

Q: How many quarts of pure antifreeze must be added to 3 quarts of 10% antifreeze soulotion to obtain a…

A:

Q: A pharmacist wants to mix a 30% saline solution with a 10% saline solution to get 200 mL of a 12%…

A: Let x be the amount of 30% saline solution and y be the amount of 10% saline solution.

Q: Armond has two solutions available in the laboratory, one with 5% alcohol and another with 13%…

A: The concentration in percentage can be converted to a decimal value by dividing the percentage by…

Q: You need a 95% alcohol solution. On hand, you have a 55 mL of a 50% alcohol mixture. How much pure…

A: You need a 95% alcohol solution. On hand, you have a 55 mL of a 50% alcohol mixture. To determine…

Q: You need a 20% alcohol solution. On hand, you have a 225 mL of a 15% alcohol mixture. You also have…

A: Given data is : 225 ml of 15% alcohol mixture. 45% alcohol mixture Let y ml of 45%  mixture alcohol…

Q: What amount of a 60% acid solution must be mixed with a 35% solution to produce 300 mL of a 55%…

A:

Q: Joy needs to mix a 10% saline solution with a 40% saline solution to create 200 millileters of a 13%…

A:

Q: What quantity of a 70% acid solution must be mixed with a 40% solution to produce 150 mL of a 60%…

A: Given.

Q: You need 850 mL of a 70% alcohol solution. On hand, you have 5% alcohol mixture. You also have 90%…

A: I am going to solve the given problem by using some simple algebra to get the required result of the…

Q: A pharmacist wishes to mix a solution that is 7% Minoxidil. She has on hand a 100ml of a 2% solution…

A: step 2 complete solution

Q: You need 1045 mL of a 10% alcohol solution. On hand, you have a 5% alcohol mixture. How much of the…

A:

Q: You need a 25% alcohol solution. On hand, you have a 300 mL of a 40% alcohol mixture. How much pure…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.