![paulusl19](/avatars/39971.jpg)
paulusl19
06.05.2020 •
Mathematics
You need a 50% solution. On hand, you have a 200 mL of a 35% alcohol mixture. You also have 70% alcohol mixture. How much of the 70% mixture will you need to add to obtain the desired solution?
Solved
Show answers
More tips
- S Style and Beauty How to choose the best mascara for your eyelashes...
- F Food and Cooking Discover Delicious Recipes You Can Make with Ground Meat...
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- S Science and Technology Why is there no gravity on other planets?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
Answers on questions: Mathematics
- M Mathematics During the first 3 centuries ad, the roman empire produced coins in the eastern provinces. some historians argue that not all these coins were produced in local mints, and further...
- M Mathematics The product of -6 and a number. translate the expression...
- M Mathematics 10 less than a number translate this expression...
- M Mathematics Ared ballon starts at 7 meters off the ground and rises at 3 meters per second. a ballon starts at 12 meters off the ground and rises at 2 meters per second. write and solve an...
- M Mathematics Jaime bought a jar of 50 vitamins. his two children each take one vitamin each day. the number of vitamins left in the jar after x days is represented by the function f (x) =50...
- M Mathematics The figure is made up of two cones and a cylinder. both cones and the cylinder have a 10 mm diameter. what is the exact volume of this figure? what is the volume of this figure?...
- M Mathematics Jonna mixes 1/4 gallon of orange juice and 1/2 gallon of pineapple juice to make punch . each serving is 1/16 gallon. how many servings can jonna make...
- M Mathematics The folding chair has different settings that change the angles formed by its parts. suppose m2 is 31 and m3 is 72. find m1. the diagram is not to scale....
- M Mathematics Charlie graphs the equation y= –12x+2 . select all statements about charlie s graph that are true. a: the graph is a straight line. b: the line does not pass through the origin....
- M Mathematics Pleassse answer quick! ( compare the function 3x+2y=12 to the following image. which of the following is a true statement? a: the y-intercept of the graphed function is greater...
Ответ:
150 mL
Step-by-step explanation:
We need a mixture that is at 50%, now we have 200 mL at 35% and another mixture that is at 70%, that is, we must calculate how much of this mixture is added, by the following equation
200 * 35% + x * 70% = 50% (x + 200)
70 + 0.7 * x = 0.5 * x + 100
0.7 * x - 0.5 * x = 100 - 70
0.2 * x = 30
x = 30 / 0.2
x = 150
150 mL must be added so that the mixture is 50%.
Ответ:
9 =9
Step-by-step explanation: